CAJ | 학술논문

建立了电感耦合等离子体原子发射光谱法测定矿石样品中钨的新方法.采用Na_2O_2熔融分解矿石样品,热水浸取,使钨完全进入碱性溶液,再向分取定量体积的碱性溶液中加入适量的酒石酸溶液络合钨,然后加入50 mL HCl(1+9)溶解,并在波长224.875{149}nm处于选定的仪器参数下以电感耦舍等离子体原子发射光谱法测定溶液中的钨.样品前处理简单、快速,且在波长224.875{149}nm处钨未受到其它元素明显的光谱干扰.溶液中钨原子发射光谱强度与ρ(WO_3)在0～20/μg/mL范围内呈良好的线性关系,校准曲线相关系数为0.99998.方法检出限为0.040μg/mL.用本方法测定了标准物质中钨的含量,测定值与认定值吻合,相对标准偏差(n=4)为0.99%～2.6%.
건립료전감우합등리자체원자발사광보법측정광석양품중오적신방법.채용Na_2O_2용융분해광석양품,열수침취,사오완전진입감성용액,재향분취정량체적적감성용액중가입괄량적주석산용액락합오,연후가입50 mL HCl(1+9)용해,병재파장224.875{149}nm처우선정적의기삼수하이전감우사등리자체원자발사광보법측정용액중적오.양품전처리간단、쾌속,차재파장224.875{149}nm처오미수도기타원소명현적광보간우.용액중오원자발사광보강도여ρ(WO_3)재0～20/μg/mL범위내정량호적선성관계,교준곡선상관계수위0.99998.방법검출한위0.040μg/mL.용본방법측정료표준물질중오적함량,측정치여인정치문합,상대표준편차(n=4)위0.99%～2.6%.
A novel method for the determination of tungsten in mineral samples by inductively coupled plasma atomic emission spectrometry was developed.The mineral samples were melted and decomposed by Na_2O_2.After being leached with hot water, the tungsten could be completely dissolved into the base solution.Proper tartaric acid was added into a certain volume of base solution to form complex with tungsten.The complex was then dissolved with 50 mL of HC1(1+9), and the content of tungsten in the solution was determined by inductively coupled plasma atomic emission spectrometer at 224.875{149} nm under the selected instrumental parameters.The pretreatment of sample was simple and fast.Moreover, the spectrum interference of other elements on tungsten was not significant at the wavelength of 224.875{149} nm.There was a good linear relationship between emission intensity of tungsten and ρ(WO_3)in the solution in the range of 0-20 μg/mol.The correlation coefficient of calibration curve was 0.99998, and the detection limit of this method was 0.040 μg/mL.The content of tungsten in standard sample was determined by this method and the results were consistent with the certified values, with the relative standard deviation(n=4)between 0.99%-2.6%.