化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2015年
4期
16-19
,共4页
王亚恩%王建华%李馨%刘靖靖%张慧丽%汤志旭
王亞恩%王建華%李馨%劉靖靖%張慧麗%湯誌旭
왕아은%왕건화%리형%류정정%장혜려%탕지욱
N-亚硝胺%气相色谱-正化学源离子阱质谱法%饮用水
N-亞硝胺%氣相色譜-正化學源離子阱質譜法%飲用水
N-아초알%기상색보-정화학원리자정질보법%음용수
N-nitrosamines%chromatography-positive chemical ionization ion trap mass spectrometry%drinking water
采用气相色谱–正化学源离子阱质谱法测定N-亚硝胺。利用二氯甲烷直接提取饮用水中的9种挥发性亚硝胺，9种挥发性亚硝胺的质量浓度与色谱峰面积线性相关，相关系数均不小于0.995，方法定量限为0.3～4.9μg／L，测定结果的相对标准偏差小于10%(n=6)，低、中、高3个添加水平的平均回收率为65%～109%。该方法快速、准确，灵敏度高，易于操作，适用于饮用水中挥发性亚硝胺的检测。
採用氣相色譜–正化學源離子阱質譜法測定N-亞硝胺。利用二氯甲烷直接提取飲用水中的9種揮髮性亞硝胺，9種揮髮性亞硝胺的質量濃度與色譜峰麵積線性相關，相關繫數均不小于0.995，方法定量限為0.3～4.9μg／L，測定結果的相對標準偏差小于10%(n=6)，低、中、高3箇添加水平的平均迴收率為65%～109%。該方法快速、準確，靈敏度高，易于操作，適用于飲用水中揮髮性亞硝胺的檢測。
채용기상색보–정화학원리자정질보법측정N-아초알。이용이록갑완직접제취음용수중적9충휘발성아초알，9충휘발성아초알적질량농도여색보봉면적선성상관，상관계수균불소우0.995，방법정량한위0.3～4.9μg／L，측정결과적상대표준편차소우10%(n=6)，저、중、고3개첨가수평적평균회수솔위65%～109%。해방법쾌속、준학，령민도고，역우조작，괄용우음용수중휘발성아초알적검측。
A gas chromatography-positive chemical ionization mass ion trap spectrometric method was developed for determination of 9 N-nitrosamines in drinking water. The sample was extracted by methylene dichloride, the concentration of N-nitrosamine was linear with the chromatographic peak area with the corelation coefficent not less than 0.995. The limit of quantitation for 9 N-nitrosamine ranged from 0.3μg/L to 4.9μg/L. The recoveries of 9 N-nitrosamine at different level were 65%–109%. The precision of the method measured by relative standard deviation (RSD) was less than 10%(n=6) for all N-nitrosamines spiked at different levels. The method is accurate and sensitive,which can be applied to the analysis of 9 N-nitrosamine in drinking water.
