CN205719704U - 一种大气颗粒物采样膜切割装置 - Google Patents

一种大气颗粒物采样膜切割装置 Download PDF

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CN205719704U
CN205719704U CN201620622271.5U CN201620622271U CN205719704U CN 205719704 U CN205719704 U CN 205719704U CN 201620622271 U CN201620622271 U CN 201620622271U CN 205719704 U CN205719704 U CN 205719704U
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sampling film
atmospheric particulates
cutter sweep
tapered end
particulates sampling
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刘海秋
洪蕾
葛鑫
庄柯
姚杰
金定强
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Guodian Science and Technology Research Institute Co Ltd
Guodian Nanjing Electric Power Test Research Co Ltd
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Nanjing Power Equipment Quality & Performance Test Center
Guodian Science and Technology Research Institute Co Ltd
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Abstract

本实用新型公开了一种大气颗粒物采样膜切割装置,用于切割大气颗粒物采样膜,包括圆盘、切刀和滑动锁头;所述圆盘的边缘设有滑动槽,滑动锁头滑动连接在滑动槽内;所述切刀的长度与圆盘半径相等,其一端与滑动锁头转动连接;所述圆盘上还设有角度刻度,以及与圆盘同圆心、不同半径的多个轮廓槽。本实用新型提供的大气颗粒物采样膜切割装置结构简单,可以方便、准确地对大气颗粒物采样膜进行切割;使用本实用新型提供的大气颗粒物采样膜切割装置进行切割时,可以最大限度地减少对采样膜的污染,将采样膜上的样品损失降到最低。

Description

一种大气颗粒物采样膜切割装置
技术领域
本实用新型涉及一种大气颗粒物采样膜切割装置。
背景技术
近年来越来越多人的关注大气污染,我国大气污染成因复杂,是环境领域的国际前沿科学问题,污染物包括气态和颗粒态一次污染物,经过一系列化学、物理过程形成的二次细颗粒污染物及臭氧等。
大气中的碳质颗粒物由元素碳(EC)、有机碳(OC)以及无机水溶性离子组成,OC在碳质颗粒中所占比例较高,达到 60%-90%,这两种物质是构成是碳质气溶胶重要组成成分。OC与EC通过直接或间接对太阳辐射的影响从而导致全球气候的变化,EC通过吸收太阳辐射从而使大气层升温,OC伴随EC进入大气,通过直接散射太阳辐射降低大气层温度。无机水溶性离子在大气气溶胶中占有重要比例,它与吸湿性有机物相互作用,形成云凝结核(CNN),从而削弱达到地面的太阳辐射。此外生物质燃烧过程中,无机水溶性离子与碳质颗粒物质是排放烟尘中的主要组分。
多位学者对大气污染控制与防治进行研究,包括农作物在收割季节露天焚烧,实验室燃烧装置模拟秸秆露天焚烧,森林火灾,草原火灾,以及对大气污染物种类、浓度以及变化规律的直接观测。在上述研究过程中都需要使用滤膜进行采样,众所周知,气体膜样品中各类污染物质的含量很少,部分浓度仅达到ppm与ppb数量级,而采集好的膜样品很容易受到污染,比如生物质焚烧烟尘的膜样品,若处理不当上很容易粘附在一次手套或其他物品上,从而造成颗粒物损失及污染,因此在处理膜样品时要尽量避免这种现象。采样后的滤膜样品切割是样品分析中一步重要环节,一般滤膜切割是带上一次性手套直接用剪刀剪下一部分,这种方式既无法确定滤膜切割的体积,也提高了膜样品的损失,另外一些剪切装置适合采样前滤膜的剪切,但仍会对采样后的滤膜造成上述的影响。
发明内容
本实用新型目的在于克服现有技术的不足,提供一种大气颗粒物采样膜切割装置。
上述目的是通过如下技术方案实现的:
一种大气颗粒物采样膜切割装置,用于切割大气颗粒物采样膜,包括圆盘、切刀和滑动锁头;所述圆盘的边缘设有滑动槽,滑动锁头滑动连接在滑动槽内;所述切刀的长度与圆盘半径相等,其一端与滑动锁头转动连接;所述圆盘上还设有角度刻度,以及与圆盘同圆心、不同半径的多个轮廓槽。
进一步地,所述切刀的一端与滑动锁头转动连接进行最大180°转动。
本实用新型的有益效果:
(1)本实用新型提供的大气颗粒物采样膜切割装置结构简单,可以方便、准确地对大气颗粒物采样膜进行切割;
(2)使用本实用新型提供的大气颗粒物采样膜切割装置进行切割时,可以最大限度地减少对采样膜的污染,将采样膜上的样品损失降到最低。
附图说明
图1是本实用新型装置的俯视图;
图2是本实用新型装置的侧视图;
其中,1、滑动锁头;2、切刀;3、滑动槽;4、角度刻度;5、轮廓槽。
具体实施方式
下面结合附图和具体实施例详细说明本实用新型的技术方案。
如图1和2所示的一种大气颗粒物采样膜切割装置,用于切割大气颗粒物采样膜,包括圆盘、切刀2和滑动锁头1;所述圆盘的边缘设有滑动槽3,滑动锁头1滑动连接在滑动槽3内;所述切刀2的长度与圆盘半径相等,其一端与滑动锁头1转动连接;所述圆盘上还设有角度刻度4,以及与圆盘同圆心、不同半径的多个轮廓槽5。其中,所述切刀2的一端与滑动锁头1转动连接进行最大180°转动。
使用方法:
切刀旋转出圆盘后将滤膜样品放置在圆盘的轮廓槽内,滑动锁头带动切刀在滑动槽内滑动,根据圆盘刻度确定首次切割位置,滑动锁头带动切刀再次在滑动槽内滑动,根据实验所需的滤膜面积确定二次切割的角度,最后得到所需面积的滤膜。
本实用新型提供的大气颗粒物采样膜切割装置结构简单,可以方便、准确地对大气颗粒物采样膜进行切割;使用本实用新型提供的大气颗粒物采样膜切割装置进行切割时,可以最大限度地减少对采样膜的污染,将采样膜上的样品损失降到最低。
上述实施例的作用在于说明本实用新型的实质性内容,但并不以此限定本实用新型的保护范围。本领域的普通技术人员应当理解,可以对本实用新型的技术方案进行修改或者等同替换,而不脱离本实用新型技术方案的实质和保护范围。

Claims (2)

1.一种大气颗粒物采样膜切割装置,用于切割大气颗粒物采样膜,其特征在于:包括圆盘、切刀和滑动锁头;所述圆盘的边缘设有滑动槽,滑动锁头滑动连接在滑动槽内;所述切刀的长度与圆盘半径相等,其一端与滑动锁头转动连接;所述圆盘上还设有角度刻度,以及与圆盘同圆心、不同半径的多个轮廓槽。
2.根据权利要求1所述的大气颗粒物采样膜切割装置,其特征在于:所述切刀的一端与滑动锁头转动连接进行最大180°转动。
CN201620622271.5U 2016-06-22 2016-06-22 一种大气颗粒物采样膜切割装置 Active CN205719704U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110186998A (zh) * 2019-06-20 2019-08-30 中国科学院大气物理研究所 大气污染物实时采样分析的装置及方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110186998A (zh) * 2019-06-20 2019-08-30 中国科学院大气物理研究所 大气污染物实时采样分析的装置及方法
CN110186998B (zh) * 2019-06-20 2023-11-28 中国科学院大气物理研究所 大气污染物实时采样分析的装置及方法

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