原子吸收分光光度法测定资丘木瓜中3种重金属含量
Journal of South-Central University for Nationalities (Natural Science Edition)(2014)
Abstract
建立了测定资丘木瓜药材中铜、铅和镉三种重金属含量的方法:采用火焰原子吸收光谱法检测铜的含量,以石墨炉原子吸收光谱法检测铅和镉的含量.3种重金属测定的检测限为0.0006μg/mL、0.0030ng/mL、0.0024 ng/mL,相对标准偏差(RSD)为2.7%、2.9%、1.2%,回收率为100%~105%,线性相关系数为0.999和0.992、0.995,均符合要求.经测定3批资丘木瓜药材中铜、铅、镉的含量分别为13.53~16.24 mg/kg、0.0163~0.0232 mg/kg、0.2267~0.3364 mg/kg,结果表明:3批木瓜样品中重金属的含量均符合《药用植物及制剂进出口绿色行业标准》中有关重金属标准的规定.
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Key words
Chaenomeles Speciosa,heavy metal elements,atomic absorption spectroscopy (AAS)
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