环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2015年
2期
50-52
,共3页
邓元秋%黄彦明%陆建军%邓琰%贺亮
鄧元鞦%黃彥明%陸建軍%鄧琰%賀亮
산원추%황언명%륙건군%산염%하량
铬%镉%微波消解%石墨炉原子吸收分光光度法%海洋沉积物
鉻%鎘%微波消解%石墨爐原子吸收分光光度法%海洋沉積物
락%력%미파소해%석묵로원자흡수분광광도법%해양침적물
Chromium%Cadmium%Microwave digestion%GFAAS%Marine sediment
以硝酸作为消解液，采用微波消解仪对海洋沉积物进行消解，用石墨炉原子吸收分光光度法测定消解液中的Cd 和 Cr。该方法在0μg ／L ～10．0μg ／L 范围内线性良好，Cd 和 Cr 的方法检出限分别为0．04 mg ／kg 和2．0 mg ／kg，实际样品的加标回收率在96．0％～100％之间，RSD 为0．3％～5．2％。用该方法与国标法同时测定北部湾海域海洋沉积物实际样品，结果无明显差异，而该方法处理样品更为省时省力。
以硝痠作為消解液，採用微波消解儀對海洋沉積物進行消解，用石墨爐原子吸收分光光度法測定消解液中的Cd 和 Cr。該方法在0μg ／L ～10．0μg ／L 範圍內線性良好，Cd 和 Cr 的方法檢齣限分彆為0．04 mg ／kg 和2．0 mg ／kg，實際樣品的加標迴收率在96．0％～100％之間，RSD 為0．3％～5．2％。用該方法與國標法同時測定北部灣海域海洋沉積物實際樣品，結果無明顯差異，而該方法處理樣品更為省時省力。
이초산작위소해액，채용미파소해의대해양침적물진행소해，용석묵로원자흡수분광광도법측정소해액중적Cd 화 Cr。해방법재0μg ／L ～10．0μg ／L 범위내선성량호，Cd 화 Cr 적방법검출한분별위0．04 mg ／kg 화2．0 mg ／kg，실제양품적가표회수솔재96．0％～100％지간，RSD 위0．3％～5．2％。용해방법여국표법동시측정북부만해역해양침적물실제양품，결과무명현차이，이해방법처리양품경위성시성력。
Using HNO3 system digestion,a method to determine the concentrations of Cd and Cr in marine sediments in part of Beibu gulf were studied by Microwave digestion instrument.The method had good linearity in the range of 0 μg /L ~1 0.0 μg /L,and the detection limit of the method for Cd and Cr is 0.04 mg /kg and 2.0 mg /kg respectively.The recovery rates and precision of the method were in the range of 96% ~1 00% and 0.3% ~5.2% respectively.The results demonstrate that no significant differences were observed between micro-wave digestion and traditional digestion.Comparing the two methods microwave digestion has the advantages of u-sing less reagent,achieving complete digestion and causing less damage to the digestion process.
