發(fā)布時(shí)間：2018-05-02 13:20

  本文選題：電氣石 + 輕金屬元素�。� 參考：《巖礦測(cè)試》2017年03期

【摘要】：電氣石是一種含硼的鋁硅酸鹽礦物,是重要的非金屬礦產(chǎn)資源和成巖成礦作用的靈敏示蹤劑,因類質(zhì)同象置換普遍使其組成成分多變,主量元素為Si、B、Al、Fe和Mg,微量元素有稀土元素、Cu、Pb、Zn、Sn、Ag和Sr等。電氣石的化學(xué)性質(zhì)非常穩(wěn)定,不能被一般的酸或堿完全溶解,本文采用硝酸-氫氟酸封閉壓力溶礦,50%王水封閉壓力復(fù)溶進(jìn)行樣品前處理,建立了電感耦合等離子體質(zhì)譜法測(cè)定電氣石中稀有輕金屬、重金屬、放射性金屬、稀土元素等29種元素的分析方法。方法檢出限為0.003~0.4μg/g,精密度(RSD,n=12)為0.9%~9.2%;國(guó)家標(biāo)準(zhǔn)物質(zhì)的測(cè)定值與標(biāo)準(zhǔn)值基本相符,各元素的加標(biāo)回收率為95%~105%。本方法解決了電氣石樣品難分解、復(fù)溶時(shí)易出現(xiàn)氫氧化鋁微細(xì)殘?jiān)膯栴},樣品試液中B、Al、Fe等主要共存離子的干擾小,各待測(cè)元素測(cè)定結(jié)果準(zhǔn)確、可靠。
[Abstract]:Tourmaline is a boron-bearing aluminosilicate mineral, which is a sensitive tracer for important nonmetallic mineral resources and diagenesis. The main elements are Si-Bn-Al-Fe and Mg.The trace elements include CuPbPbPbZn-Zn-Sn-Ag, Sr and so on. The chemical properties of tourmaline are very stable and can not be completely dissolved by general acid or alkali. In this paper, 50% Wang Shui sealed pressure solution of nitric acid and hydrofluoric acid is used for sample pretreatment. An inductively coupled plasma mass spectrometry (ICP-MS) method was developed for the determination of 29 rare light metals, heavy metals, radioactive metals and rare earth elements in tourmaline. The detection limit of the method is 0.003 ~ 0. 4 渭 g / g, the precision is 0. 9 ~ 9. 2, the determination value of the national standard substance is basically consistent with the standard value, the recovery of each element is 95 ~ 105. This method solves the problem that the sample of tourmaline is difficult to be decomposed and the fine residue of aluminum hydroxide is easy to appear in the resolution. The interference of the main coexisting ions such as Bu Al-Fe in the sample solution is small and the determination results of each element to be determined are accurate and reliable.
【作者單位】： 山東省地質(zhì)科學(xué)研究院;山東省金屬礦產(chǎn)成礦地質(zhì)過程與資源利用重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)土資源公益性行業(yè)科研專項(xiàng)(201311096-03)
【分類號(hào)】：O657.63;P575

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