摘要
目的:通过对石墨炉原子吸收光谱法测定尿铅含量影响因素的研究,找出解决办法。方法:采用标准加入法;控制空白管的吸光度;对石墨炉升温参数进行合理的选择;使用热解凃层石墨管;选择合适的基体改进剂及选择合适加入量。结果:精密度试验、回收率试验与标准质控尿样测定都符合要求,标准曲线在0μg/L^80μg/L范围内线性良好,平均回归方程为:Y=0.00113C-0.0052,相关系数r=0.99935,方法检出限为7.42μg/L,能满足铅吸收和铅中毒职业病诊断的要求。结论:使用石墨炉原子吸收光谱法测定尿铅,操作简单、快速、回收率高、背景干扰少、结果准确可靠,适合用于职业接触人群中大样本尿铅的测定。
Objective：Graphite furnace atomic absorption spectrometry determination of lead content in urine of factors,to find a solution.Methods： The standard addition method;control of the absorbance of the blank tube;parameters of graphite furnace heating a reasonable choice;use of pyrolytic coated graphite tube;choose a suitable matrix modifier agent and select the appropriate dosage.Results： The precision of the recovery test and the standard quality control urine samples were determined to meet the requirements of the standard curve in the 0 μg/L^80 μg/L was well inside the range,the average regression equation： Y=0.00113C-0.0052,correlation coefficient r=0.99935.The detection limit was 7.42 μg/L,to meet the diagnosis of occupational lead absorption and lead poisoning requirements.Conclusion： The use of graphite furnace atomic absorption spectrometry determination of lead in urine,simple,fast,high recovery rate and less background interference,accurate and which can be high,suitable for a large sample population occupational exposure to the determination of lead in urine.
出处
《中国卫生检验杂志》
CAS
2011年第2期331-332,共2页
Chinese Journal of Health Laboratory Technology
关键词
石墨炉原子吸收光谱法
尿铅
影响因素
研究
Graphite furnace atomic absorption spectrometry
Urinary lead
Factors
Research
