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Article Object ( [_status:protected] => Array ( [0] => 已发布 [1] => 草稿 [2] => 禁用 [3] => 已审核 [4] => 已回收 ) [_sticky:protected] => Array ( [0] => 否 [1] => 置顶 ) [_md:CActiveRecord:private] => CActiveRecordMetaData Object ( [tableSchema] => CMysqlTableSchema Object ( [schemaName] => [name] => article [rawName] => `article` [primaryKey] => id [sequenceName] => [foreignKeys] => Array ( ) [columns] => Array ( [id] => CMysqlColumnSchema Object ( [name] => id [rawName] => `id` [allowNull] => [dbType] => int(10) unsigned [type] => string [defaultValue] => [size] => 10 [precision] => 10 [scale] => [isPrimaryKey] => 1 [isForeignKey] => [autoIncrement] => 1 [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [sort_id] => CMysqlColumnSchema Object ( [name] => sort_id [rawName] => `sort_id` [allowNull] => [dbType] => smallint(6) unsigned [type] => integer [defaultValue] => 0 [size] => 6 [precision] => 6 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 分类id [_e:CComponent:private] => [_m:CComponent:private] => ) [title] => CMysqlColumnSchema Object ( [name] => title [rawName] => `title` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 标题 [_e:CComponent:private] => [_m:CComponent:private] => ) [title_pic] => CMysqlColumnSchema Object ( [name] => title_pic [rawName] => `title_pic` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 标题图片 [_e:CComponent:private] => [_m:CComponent:private] => ) [intro] => CMysqlColumnSchema Object ( [name] => intro [rawName] => `intro` [allowNull] => 1 [dbType] => text [type] => string [defaultValue] => [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 简介 [_e:CComponent:private] => [_m:CComponent:private] => ) [source] => CMysqlColumnSchema Object ( [name] => source [rawName] => `source` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 来源 [_e:CComponent:private] => [_m:CComponent:private] => ) [source_link] => CMysqlColumnSchema Object ( [name] => source_link [rawName] => `source_link` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 来源链接 [_e:CComponent:private] => [_m:CComponent:private] => ) [author] => CMysqlColumnSchema Object ( [name] => author [rawName] => `author` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 作者 [_e:CComponent:private] => [_m:CComponent:private] => ) [editor] => CMysqlColumnSchema Object ( [name] => editor [rawName] => `editor` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 编辑 [_e:CComponent:private] => [_m:CComponent:private] => ) [admin_id] => CMysqlColumnSchema Object ( [name] => admin_id [rawName] => `admin_id` [allowNull] => [dbType] => int(10) unsigned [type] => string [defaultValue] => 0 [size] => 10 [precision] => 10 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 管理员id [_e:CComponent:private] => [_m:CComponent:private] => ) [content] => CMysqlColumnSchema Object ( [name] => content [rawName] => `content` [allowNull] => 1 [dbType] => text [type] => string [defaultValue] => [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 内容 [_e:CComponent:private] => [_m:CComponent:private] => ) [created_at] => CMysqlColumnSchema Object ( [name] => created_at [rawName] => `created_at` [allowNull] => [dbType] => datetime [type] => string [defaultValue] => 0000-00-00 00:00:00 [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 创建日期 [_e:CComponent:private] => [_m:CComponent:private] => ) [updated_at] => CMysqlColumnSchema Object ( [name] => updated_at [rawName] => `updated_at` [allowNull] => [dbType] => datetime [type] => string [defaultValue] => 0000-00-00 00:00:00 [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 更新日期 [_e:CComponent:private] => [_m:CComponent:private] => ) [published_at] => CMysqlColumnSchema Object ( [name] => published_at [rawName] => `published_at` [allowNull] => [dbType] => datetime [type] => string [defaultValue] => 0000-00-00 00:00:00 [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 发布日期 [_e:CComponent:private] => [_m:CComponent:private] => ) [status] => CMysqlColumnSchema Object ( [name] => status [rawName] => `status` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 状态 [_e:CComponent:private] => [_m:CComponent:private] => ) [sticky] => CMysqlColumnSchema Object ( [name] => sticky [rawName] => `sticky` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 推荐 [_e:CComponent:private] => [_m:CComponent:private] => ) [display_order] => CMysqlColumnSchema Object ( [name] => display_order [rawName] => `display_order` [allowNull] => [dbType] => smallint(6) unsigned [type] => integer [defaultValue] => 0 [size] => 6 [precision] => 6 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 排序 [_e:CComponent:private] => [_m:CComponent:private] => ) [article_type] => CMysqlColumnSchema Object ( [name] => article_type [rawName] => `article_type` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 文章类型 [_e:CComponent:private] => [_m:CComponent:private] => ) [language] => CMysqlColumnSchema Object ( [name] => language [rawName] => `language` [allowNull] => 1 [dbType] => varchar(20) [type] => string [defaultValue] => [size] => 20 [precision] => 20 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [subtitle] => CMysqlColumnSchema Object ( [name] => subtitle [rawName] => `subtitle` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [file] => CMysqlColumnSchema Object ( [name] => file [rawName] => `file` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [is_oauth] => CMysqlColumnSchema Object ( [name] => is_oauth [rawName] => `is_oauth` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 是否需要认证(0为不限制) [_e:CComponent:private] => [_m:CComponent:private] => ) [is_highlight] => CMysqlColumnSchema Object ( [name] => is_highlight [rawName] => `is_highlight` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 是否高亮 [_e:CComponent:private] => [_m:CComponent:private] => ) ) [_e:CComponent:private] => [_m:CComponent:private] => ) [columns] => Array ( [id] => CMysqlColumnSchema Object ( [name] => id [rawName] => `id` [allowNull] => [dbType] => int(10) unsigned [type] => string [defaultValue] => [size] => 10 [precision] => 10 [scale] => [isPrimaryKey] => 1 [isForeignKey] => [autoIncrement] => 1 [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [sort_id] => CMysqlColumnSchema Object ( [name] => sort_id [rawName] => `sort_id` [allowNull] => [dbType] => smallint(6) unsigned [type] => integer [defaultValue] => 0 [size] => 6 [precision] => 6 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 分类id [_e:CComponent:private] => [_m:CComponent:private] => ) [title] => CMysqlColumnSchema Object ( [name] => title [rawName] => `title` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 标题 [_e:CComponent:private] => [_m:CComponent:private] => ) [title_pic] => CMysqlColumnSchema Object ( [name] => title_pic [rawName] => `title_pic` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 标题图片 [_e:CComponent:private] => [_m:CComponent:private] => ) [intro] => CMysqlColumnSchema Object ( [name] => intro [rawName] => `intro` [allowNull] => 1 [dbType] => text [type] => string [defaultValue] => [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 简介 [_e:CComponent:private] => [_m:CComponent:private] => ) [source] => CMysqlColumnSchema Object ( [name] => source [rawName] => `source` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 来源 [_e:CComponent:private] => [_m:CComponent:private] => ) [source_link] => CMysqlColumnSchema Object ( [name] => source_link [rawName] => `source_link` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 来源链接 [_e:CComponent:private] => [_m:CComponent:private] => ) [author] => CMysqlColumnSchema Object ( [name] => author [rawName] => `author` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 作者 [_e:CComponent:private] => [_m:CComponent:private] => ) [editor] => CMysqlColumnSchema Object ( [name] => editor [rawName] => `editor` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 编辑 [_e:CComponent:private] => [_m:CComponent:private] => ) [admin_id] => CMysqlColumnSchema Object ( [name] => admin_id [rawName] => `admin_id` [allowNull] => [dbType] => int(10) unsigned [type] => string [defaultValue] => 0 [size] => 10 [precision] => 10 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 管理员id [_e:CComponent:private] => [_m:CComponent:private] => ) [content] => CMysqlColumnSchema Object ( [name] => content [rawName] => `content` [allowNull] => 1 [dbType] => text [type] => string [defaultValue] => [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 内容 [_e:CComponent:private] => [_m:CComponent:private] => ) [created_at] => CMysqlColumnSchema Object ( [name] => created_at [rawName] => `created_at` [allowNull] => [dbType] => datetime [type] => string [defaultValue] => 0000-00-00 00:00:00 [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 创建日期 [_e:CComponent:private] => [_m:CComponent:private] => ) [updated_at] => CMysqlColumnSchema Object ( [name] => updated_at [rawName] => `updated_at` [allowNull] => [dbType] => datetime [type] => string [defaultValue] => 0000-00-00 00:00:00 [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 更新日期 [_e:CComponent:private] => [_m:CComponent:private] => ) [published_at] => CMysqlColumnSchema Object ( [name] => published_at [rawName] => `published_at` [allowNull] => [dbType] => datetime [type] => string [defaultValue] => 0000-00-00 00:00:00 [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 发布日期 [_e:CComponent:private] => [_m:CComponent:private] => ) [status] => CMysqlColumnSchema Object ( [name] => status [rawName] => `status` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 状态 [_e:CComponent:private] => [_m:CComponent:private] => ) [sticky] => CMysqlColumnSchema Object ( [name] => sticky [rawName] => `sticky` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 推荐 [_e:CComponent:private] => [_m:CComponent:private] => ) [display_order] => CMysqlColumnSchema Object ( [name] => display_order [rawName] => `display_order` [allowNull] => [dbType] => smallint(6) unsigned [type] => integer [defaultValue] => 0 [size] => 6 [precision] => 6 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 排序 [_e:CComponent:private] => [_m:CComponent:private] => ) [article_type] => CMysqlColumnSchema Object ( [name] => article_type [rawName] => `article_type` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 文章类型 [_e:CComponent:private] => [_m:CComponent:private] => ) [language] => CMysqlColumnSchema Object ( [name] => language [rawName] => `language` [allowNull] => 1 [dbType] => varchar(20) [type] => string [defaultValue] => [size] => 20 [precision] => 20 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [subtitle] => CMysqlColumnSchema Object ( [name] => subtitle [rawName] => `subtitle` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [file] => CMysqlColumnSchema Object ( [name] => file [rawName] => `file` [allowNull] => 1 [dbType] => varchar(255) [type] => string [defaultValue] => [size] => 255 [precision] => 255 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => [_e:CComponent:private] => [_m:CComponent:private] => ) [is_oauth] => CMysqlColumnSchema Object ( [name] => is_oauth [rawName] => `is_oauth` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 是否需要认证(0为不限制) [_e:CComponent:private] => [_m:CComponent:private] => ) [is_highlight] => CMysqlColumnSchema Object ( [name] => is_highlight [rawName] => `is_highlight` [allowNull] => [dbType] => tinyint(1) unsigned [type] => integer [defaultValue] => 0 [size] => 1 [precision] => 1 [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [comment] => 是否高亮 [_e:CComponent:private] => [_m:CComponent:private] => ) ) [relations] => Array ( [Admin] => CBelongsToRelation Object ( [joinType] => LEFT OUTER JOIN [on] => [alias] => [with] => Array ( ) [together] => [scopes] => [name] => Admin [className] => Admin [foreignKey] => Array ( [admin_id] => id ) [select] => * [condition] => [params] => Array ( ) [group] => [join] => [having] => [order] => [_e:CComponent:private] => [_m:CComponent:private] => ) [Sort] => CBelongsToRelation Object ( [joinType] => LEFT OUTER JOIN [on] => [alias] => [with] => Array ( ) [together] => [scopes] => [name] => Sort [className] => Sort [foreignKey] => Array ( [sort_id] => id ) [select] => * [condition] => [params] => Array ( ) [group] => [join] => [having] => [order] => [_e:CComponent:private] => [_m:CComponent:private] => ) ) [attributeDefaults] => Array ( [sort_id] => 0 [admin_id] => 0 [created_at] => 0000-00-00 00:00:00 [updated_at] => 0000-00-00 00:00:00 [published_at] => 0000-00-00 00:00:00 [status] => 0 [sticky] => 0 [display_order] => 0 [is_oauth] => 0 [is_highlight] => 0 ) [_model:CActiveRecordMetaData:private] => Article Object ( [_status:protected] => [_sticky:protected] => [_md:CActiveRecord:private] => CActiveRecordMetaData Object *RECURSION* [_new:CActiveRecord:private] => [_attributes:CActiveRecord:private] => Array ( ) [_related:CActiveRecord:private] => Array ( ) [_c:CActiveRecord:private] => [_pk:CActiveRecord:private] => [_alias:CActiveRecord:private] => t [_errors:CModel:private] => Array ( ) [_validators:CModel:private] => [_scenario:CModel:private] => [_e:CComponent:private] => [_m:CComponent:private] => ) ) [_new:CActiveRecord:private] => [_attributes:CActiveRecord:private] => Array ( [id] => 6480 [title] => 金融系通联数据单一来源采购项目 [sort_id] => 49 [published_at] => 2021-06-28 17:16:54 ) [_related:CActiveRecord:private] => Array ( ) [_c:CActiveRecord:private] => [_pk:CActiveRecord:private] => 6480 [_alias:CActiveRecord:private] => t [_errors:CModel:private] => Array ( ) [_validators:CModel:private] => [_scenario:CModel:private] => update [_e:CComponent:private] => [_m:CComponent:private] => )
环境学院含氟温室气体及消耗臭氧层物质在线观测系统单一来源采购项目
2021-06-25依照《深圳经济特区政府采购条例》第二十一条规定情形,环境学院含氟温室气体及消耗臭氧层物质在线观测系统采购项目采用单一来源方式采购,为保证本次采购活动的公平、公正、公开,现对上述事项进行公示。
一、项目名称
采购项目名称:环境学院含氟温室气体及消耗臭氧层物质在线观测系统单一来源采购项目
采购项目预算:2,060,000.00元
二、采购项目描述
本项目计划采购“含氟温室气体及消耗臭氧层物质在线观测系统”一套,该系统将作为环境学院AGAGE(先进全球大气实验网络)深圳站点的核心部分。该系统旨在实现对受《蒙特利尔议定书》管控的CFCs、HCFCs、Halon、CCl4、CH3Br、CH3CCl3,以及受《京都议定书》管控的PFC、SF6、NF3,以及受两个议定书共同管控的HFC等约50种公约受控卤代烃的全年自动化连续在线观测。
三、拟定的唯一供应商名称
供应商全称:华纳创新(北京)科技有限公司
四、申请理由及相关说明
本项目符合具有复杂性、专门性、特殊性 的项目,且只有唯一供应商的情况。
含氟温室气体,简称F-gas,包括《联合国气候变化框架公约》(UNFCCC)之《京都议定书》包含的7类温室气体中的4类,即氢氟碳化物(HFCs)、全氟化碳(PFCs)、六氟化硫(SF6)和三氟化氮(NF3)。含氟温室气体具有极高的全球增温潜势(GWP),如NF3的GWP100高达15750,而SF6的GWP100高达23500。因此,尽管大气中的含氟温室气体浓度极低,但含氟温室气体和ODS占长寿命温室气体辐射强迫的11%,对全球变暖起着重要作用。
消耗臭氧层物质(ODS),主要包含《蒙特利尔议定书》所规定的6大类卤代烃,即氟氯碳化物(CFCs)、氢氯氟碳化物(HCFCs)、哈龙(Halon)、四氯化碳(CCl4)、甲基氯仿(CH3CCl3)和甲基溴(CH3Br)等。这些化合物主要由工业生产,用于制冷、清洗和发泡等领域。它们能在平流层释放出卤素原子,催化臭氧光解反应,使平流层臭氧量减少,形成南极臭氧空洞,导致过量紫外线辐射到达地球表面,危及人类和地球生物圈的安全。
含氟温室气体和消耗臭氧层物质(ODS)等受《蒙特利尔议定书》和《京都议定书》管控的卤代烃类气体在环境空气中的含量在ppt(万亿分之一)级别,浓度较VOC等常规大气污染物低6个数量级,且大气浓度变化幅度小,对监测系统检测限和精度的要求极高。国内外现有用于VOC监测的商业化系统和监测方法均无法满足环境大气浓度受控卤代烃的监测需求。
目前,国际上开展公约受控卤代烃高精度在线观测的机构主要有美国国家海洋与大气管理局(NOAA)和先进全球大气实验网络(AGAGE)。NOAA采用自组装的GC/MS系统,可实现约30中卤代烃的在线分析(但不包括NF3、CF4等物种)。AGAGE则专门为环境大气卤代烃的在线监测开发了Medusa-GC/MS系统,实现了对环境空气中约50中卤代烃的全要素分析。两者均由科学家们自行设计和手工组装,无对外销售的商品化产品。
由于大气浓度极低,国内外大气卤代烃分析仪器均采用预浓缩技术,通过增加进样量来提高仪器的检出限和灵敏度。因此,冷凝预浓缩和采样分析流程是受控卤代烃分析仪器的核心技术,目前主要有以下几种方案:
1.专门为环境空气卤代烃监测研发的双冷阱超低温冷凝预浓缩和聚焦进样技术。该方案专门为环境空气ODS和含氟温室气体在线监测所开发,采用特制的快速变温双捕集阱、-200℃超低温冷凝预浓缩技术和两次聚焦进样流程,可监测环境空气中约50种ODS和含氟温室气体,包括NF3、CF4等常规方法难以监测的极低沸点含氟温室气体组分。
2.基于液氮制冷的冷凝预浓缩技术。使用液氮制冷,可达到-196℃的低温而无须使用其他制冷系统,可以有效缩小预浓缩系统体积。但由于基于液氮制冷的预浓缩仪器均为实验室手动分析而设计,自动化程度较低。另外由于必须使用液氮,无法用于背景站等环境大气连续在线监测。
3.在现有VOC冷凝预浓缩系统基础上进行改造。由于VOC监测物种浓度通常比环境大气中含卤温室气体及消耗臭氧层物质的浓度高出3~6个数量级,不需要很低的冷凝温度,因此VOC冷凝预浓缩系统的精度和物种捕集能力均难以达到环境大气卤代烃监测的要求。此外,由于VOC和卤代烃的分子极性和吸附特性存在差异,用于VOC的捕集阱、色谱柱和分析流程也难以实现对环境大气中的痕量卤代烃的有效捕集和分离。目前,基于VOC冷凝预浓缩系统的仪器仅能分析大气中少数浓度较高的卤代烃类,尚无法实现对环境大气中含卤温室气体及消耗臭氧层物质的全要素分析,特别是沸点极低的NF3、CF4等气体组分。
因此,基于方案1的在线监测系统是满足本项目要求的最佳选择。目前,在世界范围内,华纳创新(北京)科技有限公司(以下简称“华纳创新”)的天霁ODS5-PRO系统是唯一针对环境空气ODS和含氟温室气体监测进行开发,能够对包含NF3和CF4在内的环境空气进行高精度在线观测的商品化系统。华纳创新是科技部《公约受控卤代烃减排成效评估和预测预警研究》国家重点研发计划课题二《重点受控卤代烃的关键监测技术研究和应用》的参与单位,在冷凝预浓缩技术、捕集阱设计、温控系统开发、系统流程开发等方面具有雄厚的技术实力。“天霁ODS5-PRO高精度ODS和含氟温室气体监测系统”是具有自主知识产权的高精度环境空气ODS和含氟温室气体监测系统,可实现对环境空气中约50种公约受控卤代烃(含NF3、CF4等常规方法难以检测的物种)的全要素监测,系统的监测物种数量、检测限、精度与Medusa系统同处国际领先水平,并且已经实现了商品化量产。目前,天霁ODS5-PRO已经在中国气象局北京上甸子大气背景站与国内唯一一台在线Medusa系统进行了半年多的比对测试,系统稳定性和数据精度均得到了有效验证。
综上所述,天霁ODS5-PRO是目前国内外唯一可进行环境空气公约受控卤代烃全要素自动化在线监测的商品化系统,因此本项目计划以单一来源方式实施采购。
五、公示期限
2021年06月28日上午09:00至2021年07月02日下午17:00
对公示内容有异议的,请在公示期内以书面形式将意见反馈至采购人。针对同一采购程序环节的质疑须在法定质疑期内一次性提出。
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