Nicolaidou A E
General Secretariat of Research & Technology, Athens, Greece.
J Environ Pathol Toxicol Oncol. 1998;17(3-4):189-97.
Selenium (Se) was assessed in galena, sphalerite, and pyrite samples. These are components of mixed sulfide ores from the Olympias and Madem Lakkos-Mavres Petres deposits and the Skouries porphyry-copper deposit. We used atomic absorption spectroscopy (AAS) with a hydride generator system. The highest concentration of Se (516 ppm) was found in the fine-grained galena at the -135 level of the Olympias deposits. In the Madem Lakkos-Mavres Petres deposit, the highest concentration of Se (33 ppm) was found in the pyrites of the level 30. The concentration of Se in the arsenopyrites and chalcopyrites is lower than the detection limit of the analytical method (< 100 ppb). The concentrated chalcopyrite from the porphyry copper deposit at Skouries exhibits a significant Se content (average 200 ppm) in contrast to the chalcopyrite from the Olympias and the Madem Lakkos-Mavres Petres. Variations in the Se content of the sulfide minerals studied could be caused by redox-pH and/or temperature conditions, as well as by the difference in crystal structure. The Se found in the areas studied may positively affect the environment. Sulfide minerals are oxidized by microorganisms, infiltrate in the soil-water in the form of selenate or selenite ion, and directly or indirectly influence the human organism.
对方铅矿、闪锌矿和黄铁矿样品中的硒（Se）进行了评估。这些是来自奥林匹亚斯、马德姆·拉科斯 - 马夫雷斯·彼得雷斯矿床以及斯科里耶斯斑岩铜矿床的混合硫化物矿石的组成部分。我们使用了配备氢化物发生器系统的原子吸收光谱法（AAS）。在奥林匹亚斯矿床 -135水平的细粒方铅矿中发现了最高浓度的硒（516 ppm）。在马德姆·拉科斯 - 马夫雷斯·彼得雷斯矿床，在30水平的黄铁矿中发现了最高浓度的硒（33 ppm）。毒砂和黄铜矿中的硒浓度低于分析方法的检测限（<100 ppb）。与来自奥林匹亚斯和马德姆·拉科斯 - 马夫雷斯·彼得雷斯的黄铜矿相比，斯科里耶斯斑岩铜矿床的浓缩黄铜矿显示出显著的硒含量（平均200 ppm）。所研究的硫化物矿物中硒含量的变化可能是由氧化还原 - pH值和/或温度条件以及晶体结构的差异引起的。在所研究区域发现的硒可能对环境产生积极影响。硫化物矿物被微生物氧化，以硒酸盐或亚硒酸盐离子的形式渗入土壤 - 水中，并直接或间接地影响人体。
