气相色谱-离子迁移谱检测畜禽有机废物堆肥中的挥发性硫化合物  

Determination of Volatile Sulfur Compounds in Livestock Waste Compost by Gas Chromatography-ion Mobility Spectrometry

作　　者：段腾飞 左林子 张立新 许燕滨[1] Duan Teng-fei;Zuo Lin-zi;Zhang Li-xin;Xu Yan-bin(School of Environmental Science and Engineering,Guangdong University of Technology,Guangzhou 510006,China;Analysis and Test Center,Guangdong University of Technology,Guangzhou 510006,China;Shandong Haineng Scientific Instrument Co.Ltd.,Dezhou 251500,China)

机构地区：[1]广东工业大学环境科学与工程学院,广东广州510006 [2]广东工业大学分析测试中心,广东广州510006 [3]山东海能科学仪器有限公司,山东德州251500

出　　处：《广东工业大学学报》2024年第5期66-71,共6页Journal of Guangdong University of Technology

基　　金：广东省联合基金重点项目(2019B1515210033);广州市科技计划项目(202102021066)。

摘　　要：采用气相色谱-离子迁移谱技术,建立了检测畜禽有机废物堆肥中挥发性硫化合物-甲硫醚、乙硫醚、二甲基二硫醚和二硫化碳的方法。样品经除氨后用采气袋收集,经MXT-1气相色谱填充柱分离,采用正、负两种模式,在优化的载气流量和系统温度条件下进行检测。结果表明,4种挥发性硫化合物在各自线性范围内均表现出良好的线性关系(R^(2)>0.99);检出限为0.008~0.097 mg/m^(3),回收率为85%~116%,相对标准偏差(Relative Standard Deviation,RSD)为1.13%~8.42%。该方法无需浓缩富集等预处理,仅采用气袋就可完成堆肥恶臭气体的收集,检测灵敏、响应快速,可用于堆肥气体中挥发性硫化合物的现场监测。A method for determination of volatile sulfur compounds-dimethyl sulfide,diethyl sulfide,dimethyl disulfide,and carbon disulfide in livestock waste compost was established using gas chromatography-ion mobility spectroscopy technology.The sample was collected using a gas sampling bag after ammonia removal,separated on a packed gas chromatography column of MXT-1,and detected in both positive and negative modes under the optimized experimental conditions.The results showed that the four sulfur compounds represented good linearity(R^(2)>0.99)in their respective linear ranges;the detection limits were 0.008~0.097 mg/m^(3) with recoveries of 85%~116%and relative standard deviation(RSD)of 1.13%~8.42%.The method is free of pretreatment such as pre-concentration or enrichment,sensitive and rapid,and the collection of odorous composting gas can be conducted using a gas sampling bag.The method is sensitive and rapid,which can be used for on-site monitoring of volatile sulfur in compost gas.

关 键 词：气相色谱-离子迁移谱 检测 挥发性硫化合物 

分 类 号：X831[环境科学与工程—环境工程]