CAJ | 학술논문

水样采用 Mg（OH）2作为共沉淀剂，预富集水中的铅和镉，建立火焰原子吸收分光光度法直接测定了水样中的铅和镉的含量。通过测定得出方法 RSD 为1.9%～4.1%，加标回收率为93.0%～106.5%，另外与石墨炉原子吸收分光光度法对照测定值，两种方法测定结果基本一致。方法简便、快速、实用，具有较高的准确度和精密度，结果令人满意，适用于大体积水样预处理及重金属元素的测定。
수양채용 Mg（OH）2작위공침정제，예부집수중적연화력，건립화염원자흡수분광광도법직접측정료수양중적연화력적함량。통과측정득출방법 RSD 위1.9%～4.1%，가표회수솔위93.0%～106.5%，령외여석묵로원자흡수분광광도법대조측정치，량충방법측정결과기본일치。방법간편、쾌속、실용，구유교고적준학도화정밀도，결과령인만의，괄용우대체적수양예처리급중금속원소적측정。
Preconcentration of lead and cadmium in water sample was carried out by using Mg (OH) 2 as coprecipitator, and direct flame atomic absorption spectrophotometry was established for determining the content of lead and cadmium in the water sample. The method RSD was 1.9%~4.1%, standard addition recovery was 93.0%~106.5%.The results determined by the method are basically identical to the results determined by graphite furnace atomic absorption spectrophotometry. The method is simple, rapid and practical, has high accuracy and precision, the results are satisfactory, suitable for large volume water sample pretreatment and determination of heavy metal elements.