%0 Journal Article %T 自动搅拌萃取-紫外分光光度法测定常州市城市饮用水水源地石油类 %T Determination of Petroleum in Changzhou Drinking Water Source Areas by Selfdesigned Automatic Stirring ExtractionUltraviolet Spectrophotometry %A 蒋少杰,金珊,施昕澜,谢文理 %A JIANG,Shao jie,JIN,Shan,SHI,Xin lan,XIE,Wen li %J 环境监控与预警 %@ 1674-6732 %V 12 %N 2 %D 2020 %P 36-40 %K 石油类; 紫外法;自动搅拌萃取;饮用水;职业危害 %K Petroleum; Ultraviolet spectrophotometry; Automatic stirring extraction; Drinking water; Occupational hazard %X 根据《水质 石油类的测定 紫外分光光度法(试行)》(HJ 970—2018)的要求,以正己烷为溶剂,采用自行设计的搅拌式液液萃取器处理样品,萃取相经硅酸镁吸附脱除极性物质后,用紫外分光光度法测定常州市城市饮用水水源地的石油类指标。结果表明:方法检出限为0.01 mg/L,线性范围为0~16.0 mg/L,相关系数为0.999 8,4种不同浓度配制样品测定的相对误差为-15.0%~4.0%,相对标准偏差为2.2%~8.8%。各项技术指标均满足《HJ 970—2018》相关质量控制要求,相比手动萃取-红外分光光度法,自动搅拌萃取-紫外分光光度法能有效提高分析效率和降低职业危害。 %X According to Water qualityDetermination of petroleumUltraviolet spectrophotometric method(Trial) (HJ 970—2018), petroleum in samples of Changzhou drinking water source areas was completely extracted by nhexane using selfdesigned stirring extractor. Petroleum was accurately determined by ultraviolet spectrophotometry after removing polar substances through magnesium silicate adsorbent. Experimental results showed that: detection limit was 0.01 mg/L, linear plot was obtained between 0~16.0 mg/L, with correlation coefficient of 0.999 8. Samples with four different levels of petroleum standard were detected with relative errors ranged from -15.0% to 4.0% and relative standard deviations ranged from 2.2% to 8.8%. Each technical indicator satisfied the requirements of “HJ 970—2018”. Compared to manual shaking extractioninfrared spectrophotometry method, this automatic stirring extractionultraviolet spectrophotometry method effectively improved analysis efficiency and also decreased occupational hazard. %R %U http://www.hjjkyyj.com/hjjkyyj/ch/reader/view_abstract.aspx %1 JIS Version 3.0.0