摘要
目的建立工作场所空气中铋及碲化铋的原子荧光检测法。方法于2024年3月,醋酸纤维滤料采样后,经超级微波消解,原子荧光法检测铋,换算得到工作场所空气中碲化铋的含量。结果铋荧光法在1.0~10μg/L范围内呈线性,相关系数>0.9990。铋的检出限为0.02μg/L,最低检出浓度为0.02μg/m^(3),最低定量浓度为0.06μg/m^(3)。碲化铋的最低检出浓度为0.03μg/m^(3),最低定量浓度为0.09μg/m^(3)。消解效率98.6%~102.0%,批内精密度≤1.3%,批间精密度≤4.0%,室温下在7 d内稳定,1 mg/L的干扰元素(银、铝、砷、硼、钡、铍、镉、钴、铬、铯、铜、铁、镓、锂、镁、锰、钼、镍、铅、铷、锑、硒、锡、锶、钛、铊、钒、锌、锆)不影响铋的检测。结论该方法简便,快速,准确,灵敏度高,可满足工作场所空气中铋及碲化铋测定的要求。
Objective To establish an atomic fluorescence detection method for bismuth and bismuth telluride(Bi_(2)Te_(3))in the air of workplaces.Methods In March 2024,the acetate-fiber filter material was digested by ultrawave and detected by atomic fluorescence spectrometry to obtain the content of bismuth and Bi_(2)Te_(3) in the air of the workplace.Results The correlation coefficients of standard curve were above 0.9990,The detection limit of bismuth was 0.02μg/L,the minimum detection concentration was 0.02μg/m^(3),the minimum quantitation concentration was 0.06μg/m^(3),the minimum detection concentration and the minimum quantitation concentration of Bi_(2)Te_(3) was 0.03μg/m^(3) and 0.09μg/m^(3) respectively.The digestion efficiency ranged from 98.6%to 102%,the RSDs of intra-batch and inter-batch were below 1.3%and 4.0%respectively.The samples were stable within 7 days,and interference elements of 1.0 mg/L(Ag,Al,As,B,Ba,Be,Cd,Co,Cr,Cs,Cu,Fe,Ga,Li,Mg,Mn,Mo,Ni,Pb,Rb,Sb,Se,Sn,Sr,Ti,Tl,V,Zn,Zr)do not affect the detection of bismuth.Conclusion This method is simple,fast,accurate,and highly sensitive,and can meet the requirements of the determination of bismuth and bismuth telluride in the air of working place.
作者
纪倩
袁金华
曹静
王丽雅
汪浩
Ji Qian;Yuan Jinhua;Cao Jing;Wang Liya;Wang Hao(Nanjing Municipal Centre for Disease Control and Prevention,Physical and Chemical Testing Department,Nanjing 210003,China)
出处
《中华劳动卫生职业病杂志》
北大核心
2025年第11期869-872,共4页
Chinese Journal of Industrial Hygiene and Occupational Diseases
基金
南京市公共卫生检验检测重点试验室
南京市医学卫生检验重点专科。
