译 名：
Determination of Total Mercury in Aquatic Products by Cold Atomic Absorption Spectrometry
作 者：
CHANG Jia-qi;ZHANG Xiao-jun;MEI Guang-ming;Institute of Marine and Fisheries of Zhejiang Ocean University, Marine and Fisheries Research Institute of Zhejiang;
关键词：
cold atomic absorption;;aquatic products;;total mercury
摘 要：
A method was proposed for determination of total mercury content in aquatic products by DMA-80 Direct Mercury Analyzer. The conditions of sample amount and heating method were optimized and method validation was examined from the linear range, detection limit, method accuracy and precision and oth-er aspects. Experimental results showed that the best sample amount was in the range of 0.080 0-0.160 0 g and the injection time was only 262 s after optimization of heating method. Two standard curves with the range of high concentration(50-400 ng) and low concentration(0-20 ng) were established which could quantify dif-ferent levels of mercury in samples determined. The detection limit was 0.06 μg/kg and the detection results of standard reference materials were all in the range of reference value, with RSDs all less than 3.6%. Without digestion or complex pre-processing and with the advantages of wide quantitative range, high accura cy, good precision, low detection limit and fast determination speed.,the method could be used as an ideal method for determination of total mercury in aquatic products.
