广东微量元素科学
廣東微量元素科學
엄동미량원소과학
GUANGDONG TRACE ELEMENTS SCIENCE
2014年
3期
7-12
,共6页
茶叶铅镉%石墨炉原子吸收法%干法消解%湿法消解
茶葉鉛鎘%石墨爐原子吸收法%榦法消解%濕法消解
다협연력%석묵로원자흡수법%간법소해%습법소해
lead and cadmium in tea -leaves%GFAAS%dry digestion%wet digestion
目的：通过对茶叶标准品中铅镉含量的测定，比较干法消解和湿法消解对石墨炉原子吸收法测茶叶中铅镉含量的影响，以及样品干质量和湿质量对计算结果的影响。方法通过干、湿法消解后，采用石墨炉原子化器原子化和Zeeman效应背景校正，测量吸收峰面积，通过绘制标准曲线测量茶叶标准品中铅镉含量。结果湿法消解-石墨炉原子吸收法测茶叶中铅镉比干法消解的结果更理想，使用样品干质量计算结果更接近参考值。结论石墨炉原子吸收法测茶叶中铅镉时湿法消解比干法消解好。
目的：通過對茶葉標準品中鉛鎘含量的測定，比較榦法消解和濕法消解對石墨爐原子吸收法測茶葉中鉛鎘含量的影響，以及樣品榦質量和濕質量對計算結果的影響。方法通過榦、濕法消解後，採用石墨爐原子化器原子化和Zeeman效應揹景校正，測量吸收峰麵積，通過繪製標準麯線測量茶葉標準品中鉛鎘含量。結果濕法消解-石墨爐原子吸收法測茶葉中鉛鎘比榦法消解的結果更理想，使用樣品榦質量計算結果更接近參攷值。結論石墨爐原子吸收法測茶葉中鉛鎘時濕法消解比榦法消解好。
목적：통과대다협표준품중연력함량적측정，비교간법소해화습법소해대석묵로원자흡수법측다협중연력함량적영향，이급양품간질량화습질량대계산결과적영향。방법통과간、습법소해후，채용석묵로원자화기원자화화Zeeman효응배경교정，측량흡수봉면적，통과회제표준곡선측량다협표준품중연력함량。결과습법소해-석묵로원자흡수법측다협중연력비간법소해적결과경이상，사용양품간질량계산결과경접근삼고치。결론석묵로원자흡수법측다협중연력시습법소해비간법소해호。
Objective Through the standard determination of Pb and Cd contents in tea -leaves, compared the effects of dry digestion and wet digestion with GFAAS determination of Pb and Cd content in tea, as well as the sample dry weight and wet weight and the influence on the calculation results . Methods After dry digestion and wet digestion , using the graphite furnace atomizer atomization and Zeeman-effect background correction , measuring the absorption peak area , by drawing standard curves measured content standards for lead and cadmium in tea leaves .Results Wet digestion -GFAAS determination of Pb and Cd in tea is better than dry digestion and using the dry weight of sample calculations are more close to the reference value .Conclusion When determination of Pb and Cd in tea-leaves by GFAAS use the wet digestion is better than dry digestion .
