化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
4期
38-41
,共4页
石墨炉原子吸收法%固体废物%铍%钼
石墨爐原子吸收法%固體廢物%鈹%鉬
석묵로원자흡수법%고체폐물%피%목
graphite furnace atomic absorption spectrometry%solid waste%beryllium%molybdenum
建立了石墨炉原子吸收法测定固体废物中铍和钼的方法。采用盐酸–硝酸–氢氟酸–高氯酸消解样品，钯盐作基体改进剂，消除了基体干扰。铍、钼的质量浓度分别在0~4.0，0~50.0μg／L范围内与吸光度呈良好的线性，线性相关系数均为0.9996，检出限分别为0.03，0.2μg／g。实际样品加标回收率为82.5%～117.0%，测定结果的相对标准偏差为6.6%～10.4%(n=6)。该方法选择性强、灵敏度高，测定结果准确，满足固体废物全量分析要求。
建立瞭石墨爐原子吸收法測定固體廢物中鈹和鉬的方法。採用鹽痠–硝痠–氫氟痠–高氯痠消解樣品，鈀鹽作基體改進劑，消除瞭基體榦擾。鈹、鉬的質量濃度分彆在0~4.0，0~50.0μg／L範圍內與吸光度呈良好的線性，線性相關繫數均為0.9996，檢齣限分彆為0.03，0.2μg／g。實際樣品加標迴收率為82.5%～117.0%，測定結果的相對標準偏差為6.6%～10.4%(n=6)。該方法選擇性彊、靈敏度高，測定結果準確，滿足固體廢物全量分析要求。
건립료석묵로원자흡수법측정고체폐물중피화목적방법。채용염산–초산–경불산–고록산소해양품，파염작기체개진제，소제료기체간우。피、목적질량농도분별재0~4.0，0~50.0μg／L범위내여흡광도정량호적선성，선성상관계수균위0.9996，검출한분별위0.03，0.2μg／g。실제양품가표회수솔위82.5%～117.0%，측정결과적상대표준편차위6.6%～10.4%(n=6)。해방법선택성강、령민도고，측정결과준학，만족고체폐물전량분석요구。
A method for determination of beryllium and molybdenum in solid wastes by graphite furnace absorption spectrometry was established. Hydrochloric acid, nitric acid, hydrofluoric acid and perchloric acid were selected to digest samples, and palladium salt was choosed as matrix modifier to eliminate the matrix interference. The concentration of beryllium and molybdenum showed a linear dependence on absorbence in the range of 0–4.0 μg/L, 0–50 μg/L, respectively, with the correlation coefficient of 0.999 6. The detection limits of beryllium and molybdenum were 0.03, 0.2 μg/g, respectively. The relative standard deviation of detection results was 6.6%–10.4%(n=6), and the recovery was between 82.5% and 117.0%. Therefore, the method is sensitive, which accuracy can meet the requirement of the full analysis of solid waste.
