测汞仪直接测定磷矿石中的汞  

Direct Determination of Mercury in Phosphate Rock Using Mercury Measuring Instrument

作　　者：苏海涛 白帆 徐永娥 他德洪 SU Haitao;BAI Fan;XU Yong′e;TA Dehong(Yunnan Institute of Product Quality Supervision and Inspection,Kunming,Yunnan 650223,China)

机构地区：[1]云南省产品质量监督检验研究院,云南昆明650223

出　　处：《肥料与健康》2023年第3期65-68,共4页Fertilizer & Health

摘　　要：建立了测汞仪直接测定磷矿石中汞含量的方法,并与国家标准《磷矿石和磷精矿中铅、砷、汞含量的测定》(GB/T 29875—2013)中给出的原子荧光光谱法进行了对比试验。结果表明,直接测汞仪法的测定结果与原子荧光光谱法的一致,加标回收率为87.08%~96.50%。采用测汞仪直接测定磷矿石中汞的含量,不使用有毒有害的试剂,也无需对样品进行前处理,即可实现磷矿石中汞含量的快速测定。A method for the direct determination of mercury in phosphate rock using mercury measuring instrument is established and compared with the atomic fluorescence spectrometry given in the national standard"Determination of lead,arsenic,mercury in phosphate rock and concentrate"(GB/T 29875—2013).The results show that the determination results of the direct mercury measuring instrument are consistent with those of the atomic fluorescence spectrometry,with the spiked recoveries ranging from 87.08%to 96.50%.The direct determination of mercury in phosphate rock by mercury measuring instrument can achieve rapid determination of mercury in phosphate rock without the use of toxic and harmful reagents and pre-treatment of samples.

关 键 词：直接测汞仪法 磷矿石 汞含量 

分 类 号：O657.31[理学—分析化学]