Определение содержания редкоземельных элементов в аэрозолях воздуха рабочей зоны металлургического предприятия методом ИСП-МС
Определение содержания редкоземельных элементов в аэрозолях воздуха рабочей зоны металлургического предприятия методом ИСП-МС
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Определение содержания редкоземельных элементов аэрозолях воздуха рабочей ме таллургического предприятия методом С
DOI：
10.31089/1026-9428-2018-10-28-33
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
G. A. Veikhman
中科院分区：
文献类型：
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作者：
T. S. Ulanova;M. V. Volkova;Elena V. Stenno;A. V. Nedoshitova;G. A. Veikhman
本文介绍了一种用电感耦合等离子体质谱法测定工作场所空气中15种稀土元素的新方法。本文介绍了工作场所空气采样条件和美国Agilent 7500质谱仪的设置，用于15种稀土元素在宽浓度范围内的定量分析。作者选择了建立校准曲线的浓度，证明了选择和使用内标物的合理性，以考虑基质效应、转运干扰和更精确的分析。实验有助于评估必要的最佳空气样品体积和允许的采样速度，以证明气溶胶过滤器的选择，通过«输入发现»方法研究基质对分析准确度的影响，设置使用微波系统、微波炉和热室酸溶解制备AFA-HA、AFA-HP型气溶胶过滤器的条件。当使用含氦的反应碰撞池通过ICP-MS方法对0.1 m3空气进行采样时，测量工作场所空气中15种元素质量浓度的指定方法的高灵敏度能够检测到0.001 -25 mg/m3范围内的镧、0.001 -10 mg/m3范围内的铈、0.0005 -10 mg/m3范围内的镨，钕0.001 ~ 100 mg/m3，钐0.0005 ~ 100 mg/m3，铕0.001 ~ 50 mg/m3，误差21%;钇-0.0005 -25 mg/m3，钆-0.0001 -100 mg/m3，铽-0.0001 -10 mg/m3，镝，钬，铒-0.0005 -50 mg/m3，铥-0.0005 -10 mg/m3，镱0.0005 ~ 100 mg/m3，镥0.0001 ~ 25 mg/m3，误差20-21%。有毒有害企业工作场所空气中稀土元素含量，mg/m3：镧0.003 - 0.0019，铈0.00065 - 0.0036，镨0.00006 - 0.00034，钕0.00002 - 0.0009，钐0.00001 - 0.00006，铕0.00008 - 0.00001，钇0.00001以下，钆0.00002 - 0.000034，铽、镝、钬、铒、铥、镱、镥0.000007以下。
The authors specified a new method to assess 15 rare earth elements in one workplace air sample by mass spectrometry with inductively coupled plasma. The article contains conditions of workplace air sampling and settings of mass spectrometer Agilent 7500сх (USA) for quantitative assessment of 15 rare earth elements in wide range of concentrations. The authors selected concentrations to build calibration curves, justified a choice and use of internal standard for consideration of matrix effect, transport disturbances and more precise analysis. Experiments helped to evaluate necessary optimal volume of air sample and allowable speed of sampling, to justify choice of aerosol filters, to study matrix influence on analysis accuracy by «input-found» method, to set conditions of preparing aerosol filters of AFA-HA, AFA-HP types with use of microwave system, muffle furnace and acid dissolution in thermal chamber. High sensitivity of the specified method measuring mass concentrations of 15 elements in workplace air, when sampling 0,1 m 3 of air by ICP-MS method with use of reaction collisional cell with helium, enables to detect lanthanum in range of 0,001–25 mg/m 3 , cerium — 0,001–10 mg/m 3 , praseodymium — 0,0005–10 mg/m 3 , neodymium — 0,001–100 mg/m 3 , samarium — 0,0005–100 mg/m 3 , europium — 0,001–50 mg/m 3 with 21% error; yttrium — 0,0005–25 mg/m 3 , gadolinium — 0,0001–100 mg/m 3 , terbium — 0,0001–10 mg/m 3 , dysprosium, holmium, erbium — 0,0005–50 mg/m 3 , thulium — 0,0005–10 mg/m 3 , ytterbium — 0,0005–100 mg/m 3 , lutetium — 0,0001–25 mg/m 3 with 20–21% error. Content of rare earth elements in workplace air of metallurgic enterprise at workplaces, mg/m 3 : lanthanum 0,003–0,0019, cerium 0,00065–0,0036, praseodymium 0,00006–0,00034, neodymium 0,00002–0,0009, samarium 0,00001–0,00 006, europium 0,000008–0,00001, yttrium under 0,00001, gadolinium 0,00002–0,000034, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium under 0,000007.