本文選題：高純二氧化鍺 + 氯��； 參考：《冶金分析》2015年05期

【摘要】：我國行業(yè)分析標(biāo)準(zhǔn)采用硫氰酸汞分光光度法測定二氧化鍺中氯含量,由于硫氰酸汞是一種劇毒試劑,影響工作人員身體健康和污染環(huán)境,為此,建立了一種無毒的測定高純二氧化鍺中氯的電位滴定法。實驗結(jié)果表明:在pH 2~4的乙醇-水的介質(zhì)中,以硝酸銀標(biāo)準(zhǔn)溶液作為滴定劑,二級微商法確定滴定終點,滴定曲線突躍明顯,終點準(zhǔn)確,基體鍺、大量的Na+、NO3-和二氧化鍺中微量金屬元素不影響氯的測定。方法用于高純二氧化鍺樣品中氯的測定,測定結(jié)果與行業(yè)標(biāo)準(zhǔn)方法(硫氰酸汞分光光度法)相一致,相對標(biāo)準(zhǔn)偏差在0.89%~1.6%之間。
[Abstract]:The mercury thiocyanate spectrophotometry is used to determine the chlorine content in germanium oxide in China. Because mercury thiocyanate is a highly toxic reagent, it affects the health of workers and pollutes the environment. A nontoxic potentiometric titration method for the determination of chlorine in high purity germanium oxide was established. The results showed that the titration end point was determined by using silver nitrate standard solution as titrant, the titration curve was sharp, the end point was accurate, and the base germanium was obtained by using silver nitrate standard solution as titration agent in the ethanol-water medium of pH 2 + 4. The determination of chlorine is not affected by a large amount of trace metal elements in Na _ (no _ 3 -) and GE _ (2) O _ (2). The method has been applied to the determination of chlorine in high purity germanium oxide samples. The results are in agreement with the industry standard method (mercury thiocyanate spectrophotometry). The relative standard deviation is between 0.89% and 1.6%.
【作者單位】： 廣東省韶關(guān)冶煉廠;
【分類號】：TQ134.31;O657.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

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本文編號：2102359