【摘要】：使用鹽酸和硝酸溶解樣品,采用基體匹配法繪制校準(zhǔn)曲線消除基體效應(yīng)的影響,選擇靈敏度高且不受共存元素影響的譜線Be 313.107nm作為分析線,建立了電感耦合等離子體原子發(fā)射光譜法(ICP-AES)測(cè)定鋁合金中鈹質(zhì)量分?jǐn)?shù)為0.000 05%~0.000 5%的分析方法。方法中鈹?shù)臋z出限為0.000 001 6%(質(zhì)量分?jǐn)?shù))。鈹質(zhì)量濃度在0.002~0.020μg/mL范圍內(nèi),校準(zhǔn)曲線的線性回歸方程為I=8.894×106ρ+1.747×105,相關(guān)系數(shù)r=0.999 6。按照實(shí)驗(yàn)方法測(cè)定鋁合金標(biāo)準(zhǔn)樣品中鈹,測(cè)定值與認(rèn)定值一致,相對(duì)標(biāo)準(zhǔn)偏差(RSD,n=8)小于10%。
[Abstract]:The sample was dissolved by hydrochloric acid and nitric acid, the calibration curve was drawn by matrix matching method to eliminate the influence of matrix effect, and the spectral line Be 313.107nm with high sensitivity and not affected by coexisting elements was selected as the analysis line. A method for the determination of beryllium in aluminum alloy by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. The detection limit of beryllium is 0.000 (mass fraction). When the mass concentration of beryllium is in the range of 0.002 ~ 0.020 渭 g / mL, the linear regression equation of the calibration curve is I 鈮，

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