物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
2期
393-395,401
,共4页
陈海杰%于兆水%邢夏%张雪梅%张勤
陳海傑%于兆水%邢夏%張雪梅%張勤
진해걸%우조수%형하%장설매%장근
微波消解%植物样%冷原子荧光%氯化亚锡
微波消解%植物樣%冷原子熒光%氯化亞錫
미파소해%식물양%랭원자형광%록화아석
microwave digestion%plant sample%cold atomic fluorescence spectroscopy%stannous chloride
为了简化测量植物中汞含量的方法，提高灵敏度及结果的可信度，实验采用微波消解植物样品的办法，使样品经氯化亚锡还原，再用冷原子荧光测定出植物样品中汞的含量。确定了消解样品的方法和微波消解样品的条件，优化了仪器的最佳工作参数。方法检出限0．30×10-9（稀释因子100倍），精密度（n＝12）在2．09％～6．05％，加标回收率94．1％～105．5％，方法经生物国家一级标准物质验证方法准确可靠。
為瞭簡化測量植物中汞含量的方法，提高靈敏度及結果的可信度，實驗採用微波消解植物樣品的辦法，使樣品經氯化亞錫還原，再用冷原子熒光測定齣植物樣品中汞的含量。確定瞭消解樣品的方法和微波消解樣品的條件，優化瞭儀器的最佳工作參數。方法檢齣限0．30×10-9（稀釋因子100倍），精密度（n＝12）在2．09％～6．05％，加標迴收率94．1％～105．5％，方法經生物國傢一級標準物質驗證方法準確可靠。
위료간화측량식물중홍함량적방법，제고령민도급결과적가신도，실험채용미파소해식물양품적판법，사양품경록화아석환원，재용랭원자형광측정출식물양품중홍적함량。학정료소해양품적방법화미파소해양품적조건，우화료의기적최가공작삼수。방법검출한0．30×10-9（희석인자100배），정밀도（n＝12）재2．09％～6．05％，가표회수솔94．1％～105．5％，방법경생물국가일급표준물질험증방법준학가고。
For the purpose of simplifying the determination of Hg in plants and improving sensitivity and reliability of the result, samples were firstly treated through the micro-wave digestion process and then reduced with the SnCl2 . After that, the element Hg in the samples was detected with the cold atomic fluorescence spectroscopy. The best solution for the samples digestion and the optimal work parame-ters of the test instrument were obtained during the experiment. The detection limit is 0.30×10-9(dilution factor 100), RSD (n=12) is between 2.09% and 6.05%, and the recovery for the sample is in the range of 94.1%~105.5%. The method was applied to the determi-nation of Hg in biological national standard reference materials and the results show its accuracy and reliability.
