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首页> 外国专利> METHOD OF QUANTITATIVE DETERMINATION OF ALUMINIUM, VANADIUM, TUNGSTEN, IRON, CADMIUM, COBALT, MAGNESIUM, MANGANESE, COPPER, NICKEL, LEAD, STRONTIUM, TITANIUM, CHROME, ZINC IN ATMOSPHERIC AIR BY MASS SPECTROMETRY WITH INDUCTIVELY COUPLED PLASMA

METHOD OF QUANTITATIVE DETERMINATION OF ALUMINIUM, VANADIUM, TUNGSTEN, IRON, CADMIUM, COBALT, MAGNESIUM, MANGANESE, COPPER, NICKEL, LEAD, STRONTIUM, TITANIUM, CHROME, ZINC IN ATMOSPHERIC AIR BY MASS SPECTROMETRY WITH INDUCTIVELY COUPLED PLASMA

机译：电感耦合等离子体质谱法定量测定大气中铝，钒，钨，铁，镉，钴，钴，镁，锰，铜，镍，铅，锶，钛，铬，锌。

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FIELD: chemistry.;SUBSTANCE: sample is taken while drawing through an atmospheric air filter. The filter is then decomposed by the sample preparation method in a muffle furnace. A solution of the internal standard is added to the filter, placed in the muffle furnace and held in series at a temperature of 100°C for 40-60 minutes, at a temperature of 250°C for 40-60 minutes and then the ashing is carried out at a temperature of 450-500°C. The ash is wetted with concentrated nitric acid, heated on a sand bath and evaporated to a wet salt state. After cooling, they are dissolved in 5 cm3 of 1% aqueous solution of nitric acid, transferred to a volumetric tube and the resulting volume is adjusted to 10 cm3 by 1% aqueous solution of nitric acid. The sample is placed in the tube of a sampling device of a mass spectrometer with an inductively coupled argon plasma and measurement is carried out using a reaction-collision cell with helium passing through it as a reactant gas, and the concentration of a particular metal is determined using a calibration chart, taking into account the adjustment of the air volume sampled for analysis to normal conditions. In this case, the sample is taken by drawing the test air in a volume of 6-20 m3. Before adding the inner standard solution to the filter, 0.1 cm3 of ethyl alcohol and 0.5 cm3 of 20% solution of ammonium sulfate or potassium disulfate in deionized water are successively injected into a quartz cup. 0.1 cm3 of the internal standard solution injected afterwards contains a mass concentration of the reference element - indium - in an amount of 100 mcg/dm3. Moreover, the ashing in the muffle furnace at a temperature of 450-500°C is carried for 3.0-3.5 hours, and the ashes formed by ashing are wetted with 0.3-0.5 cm3 of concentrated nitric acid with density of 1.415 g/cm3. Measurements in the prepared sample of specific metal content in a mass spectrometer are carried out by passing helium through a reaction-collision cell at a rate of 5.2-5.5 cm3/min. It is possible to determine 15 chemical elements - metals - in atmospheric air from a single sample in a wide range of concentrations at a level from 0.000001 to 5 mg/m3.;EFFECT: expanded ability to determine elements.;5 cl, 9 tbl
机译：领域：化学;物质：通过大气过滤器抽取样品。然后通过样品制备方法在马弗炉中分解过滤器。将内标溶液添加到过滤器中，放入马弗炉中，在100°C的温度下串联保持40-60分钟，在250°C的温度下保持40-60分钟，然后灰化在450-500℃的温度下进行。灰分用浓硝酸润湿，在沙浴上加热并蒸发至湿盐状态。冷却后，将其溶解在5 cm 3 的1％硝酸水溶液中，转移到容量管中，将体积调整为10 cm 3 1。 ％的硝酸水溶液。将样品放入带有电感耦合氩等离子体的质谱仪采样装置的管中，并使用反应碰撞池进行测量，其中氦作为反应气体通过该池，并且特定金属的浓度为使用校准表确定，并考虑到要分析的空气量调整到正常条件。在这种情况下，通过抽取6-20 m 3 的测试空气来采集样品。在将内标溶液添加到过滤器中之前，依次注入0.1 cm 3 的乙醇和0.5 cm 3 的20％硫酸铵或二硫酸钾在去离子水中的溶液。放入石英杯。随后注入的0.1 cm 3 内标溶液中所含参考元素-铟的质量浓度为100 mcg / dm 3 。此外，在马弗炉中在450-500℃的温度下进行灰化3.0-3.5小时，并用0.3-0.5cm 3 浓硝酸润湿由灰化形成的灰烬。密度为1.415 g / cm 3 。通过使氦气以5.2-5.5 cm 3 / min的速度通过反应碰撞池，在质谱仪中对制备的特定金属含量的样品进行测量。可以从一个浓度范围为0.000001至5 mg / m 3 的宽范围内的单个样品中测定大气中的15种化学元素-金属-效果：扩展的测定能力元素。; 5 cl，9 tbl

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