DECOMPOSITION OF CINNABAR AND ORGANOMERCURIALS IN GEOLOGICAL-MATERIALS WITH NITRIC-ACID - SULFURIC-ACID FOR THE DETERMINATION OF TOTAL MERCURY BY COLD VAPOR ATOMIC-ABSORPTION SPECTROMETRY

被引：19

作者：

KULDVERE, A

机构：

[1] Geological Survey of Norway, N-7002 Trondheim

来源：

ANALYST | 1990年 / 115卷 / 05期

关键词：

Cold vapour atomic absorption spectrometry; Decomposition of cinnabar and organomercurials; Geological sample; Total mercury determination;

D O I：

10.1039/an9901500559

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Data are presented to show that cinnabar (HgS) dissolves very slowly in HNO3 - H2SO4 at room temperature and at temperatures below that of a boiling water-bath. On a boiling water-bath, however, cinnabar was found to be decomposed rapidly by this acid mixture. The experiments illustrated the influence of the temperature on the speed of the reaction. On the basis of these experiments a digestion procedure was developed that uses HNO3 - H2SO4 (2 + 3) for the extraction of total mercury from geological samples (rocks, soils and sediments) containing cinnabar and organomercurials.

引用

页码：559 / 562

页数：4

共 27 条

[1] IMPROVED DIGESTION METHOD FOR EXTRACTION OF MERCURY FROM ENVIRONMENTAL SAMPLES [J].