| 有机硫恶臭物质采样和分析检测技术研究 |
| 摘要点击 2027 全文点击 1987 投稿时间：1993-06-09 |
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| 中文关键词 恶臭 有机硫 采样 GC、GC/MS分析 |
| 英文关键词 malordor organic sulfur sampling GC GC/MS |
| DOI 10.13227/j.hjkx.19930507 |
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| 中文摘要 |
| 本研究以二甲二硫醚(DMDS)和甲硫醇(CH3SH)为代表对有机硫恶臭物质的采样浓缩、热解析和GC、GC/MS的色谱分离、定性鉴定和定量检测方法进行了综合实验技术研究.与此同时研制开发了恶臭污染监测的系列专用配套装置--采样管、微型采样泵、热解析色谱进样装置和标准气体物质发生装置.经筛选确认.国产GDXE105采样管可对DMDS和CH3SH实现直接常温采样浓缩,样品回收率分别为100%和60%.GC/FPD对二种硫化物的检出下限分别为0.3和0.2ng.使用自制装置配制之标准气体的精度优于±3%. |
| 英文摘要 |
| Complex techniques of sampling and determing main mal-ordors have been developed in this paper.Sampling on solid adsorbents followed by thermodesorption and GC/FPD and /or GC/MS was evaluated as a method for the quantitative analysis of CH3SH and (CH3)2S2 in air.Some apparatuses-Adsorbent Sampling Tube, Constant-flow sampling Pump, Thermodesorption Device and Gas Mixer for the preparation of calibration gas mixtures were developed and produced.The experimental results showed that the chinese-made GDX-105 was found suitable for adsorption and collection of CH3SH and (CH3)2S2 at the room temperature.The method affords recoveries between 60% and 100%.The limits of detection were 0.3 and 0.2 ng for CH3SH and (CH3)2S2.An accuracy of ±3% was obtained for the standard gases of CH3SH and (CH3)2S2 in the air or N2. |
