不同分析方法测定水中丁基黄原酸的比较  

Comparison of Different Analytical Methods for Determination of Butylxanthic Acid in Water

作　　者：郭龙 刘畅 李晓凡 张水燕 方洪科 GUO Long;LIU Chang;LI Xiao-fan;ZHANG Shui-yan;FANG Hong-ke(Jinan Ecology and Environment Monitoring Center of Shandong Province,Jinan Shandong 250102,China)

机构地区：[1]山东省济南生态环境监测中心,山东济南250102

出　　处：《当代化工》2022年第4期1001-1005,共5页Contemporary Chemical Industry

基　　金：济南市科技局民生专项,小清河流域水质提升应用技术研究及工程示范(项目编号:201913015)。

摘　　要：探讨了铜试剂亚铜分光光度法、紫外分光光度法、吹扫捕集/气相色谱-质谱法3种分析方法对测定水中丁基黄原酸的影响,从样品采集和保存、方法原理和干扰、方法检出限和标准曲线、精密度和加标回收率、实际样品分析结果等方面,比较了3种分析方法的优缺点及适用范围。结果表明:采集未知样品时,应保持样品的弱碱性,并尽快地分析。由于丁基黄原酸仅存在于选矿废水中,因此对于环境介质水样,若样品中丁基黄原酸质量浓度低于嗅阈值,可优先选用吹扫捕集/气相色谱-质谱法;否则,可选用紫外分光光度法并辅助铜试剂亚铜分光光度法。The effects of three analytical methods including the copper reagent cuprous spectrophotometry, ultraviolet spectrophotometry, and purge and trap/gas chromatography-mass spectrometry on the determination of butylxanthic acid in water were discussed. Combined with actual sample analysis, the advantages, disadvantages and applicability of three analytical methods were compared in term of various factors, such as sample collection and storage, method principle and interference, method detection limit and standard curve, precision and spike recovery. The results showed that the samples should be kept weakly alkaline and analyzed as soon as possible when collecting unknown samples. Since butyl xanthogen acid only exists in the mineral processing wastewater, therefore, the sample is analyzed by purge and trap/gas chromatography-mass spectrometry when the environmental water sample concentration is below the olfactory thresholds, otherwise, by ultraviolet spectrophotometry assisted with copper reagent cuprous spectrophotometry for determination.

关 键 词：铜试剂亚铜分光光度法 紫外分光光度法 吹扫捕集/气相色谱-质谱法 丁基黄原酸 

分 类 号：X832[环境科学与工程—环境工程]