【摘要】：用碳鏈的碳數(shù)與汽油樣品近似的異辛烷以1∶1的質(zhì)量比稀釋樣品,并引入所選高效霧化系統(tǒng)處理。按經(jīng)優(yōu)化的操作條件,用電感耦合等離子體原子發(fā)射光譜法測(cè)定汽油中8種有害元素(鉛、鐵、錳、銅、磷、硫、氯和硅)的含量。上述8種元素的質(zhì)量分?jǐn)?shù)在一定范圍內(nèi)與分析信號(hào)之間呈線性關(guān)系。檢出限(3s)在0.34~250μg·kg~(-1)之間。按標(biāo)準(zhǔn)加入法進(jìn)行回收試驗(yàn),回收率在94.4%~108%之間,測(cè)定值的相對(duì)標(biāo)準(zhǔn)偏差(n=7)在1.1%~4.9%之間。
[Abstract]:Isooctane, which is similar to gasoline sample in carbon number of carbon chain, is diluted at 1:1 mass ratio, and the selected high efficiency atomization system is introduced to treat the sample. According to the optimized operating conditions, the contents of eight harmful elements (lead, iron, manganese, copper, phosphorus, sulfur, chlorine and silicon) in gasoline were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). There is a linear relationship between the mass fraction of the above eight elements and the analytical signal in a certain range. The detection limit (3 s) was between 0.34 渭 g kg~ (-1). According to the standard addition method, the recovery rate was 94. 4% and the relative standard deviation (nong 7) was between 1. 1% and 4. 9%.
【作者單位】： 深圳市計(jì)量質(zhì)量檢測(cè)研究院;
【基金】：國(guó)家標(biāo)準(zhǔn)制定計(jì)劃能源項(xiàng)目(20141511-T-469) 2015年度廣東省質(zhì)監(jiān)局科技項(xiàng)目(2015CZ06)
【分類號(hào)】：TE626.21;O657.31
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本文編號(hào)：2371973