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湖北阳新富水金矿金的显微研究 被引量:1
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作者 洪汉烈 彭长琪 陈文怡 《矿物学报》 CAS CSCD 北大核心 1997年第2期169-174,共6页
富水金矿为风化型金矿床,本文报道了该矿床金的显微分析结果。运用电子探针、电子显微镜以及光学显微镜等分析手段,查明矿床中金的产出状态、颗粒大小以及金矿物的化学成分等特征。这些金以次显微金的形式吸附于粘土矿物高岭石、水云... 富水金矿为风化型金矿床,本文报道了该矿床金的显微分析结果。运用电子探针、电子显微镜以及光学显微镜等分析手段,查明矿床中金的产出状态、颗粒大小以及金矿物的化学成分等特征。这些金以次显微金的形式吸附于粘土矿物高岭石、水云母的晶体边缘,或混杂于褐铁矿中的外铁矿晶体集合体之间;此外,部分以显微的粒间金形式产出。根据能谱成分分析及电子探针分析,这些金均为独立的自然金矿物,具有极高的成色。 展开更多
关键词 富水金 显微金 自然金 金矿床 显微分析
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再论富水金矿床控矿机制及找矿前景 被引量:1
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作者 孙祥民 许红 张文胜 《资源环境与工程》 2012年第1期14-16,21,共4页
阳新富水金矿床发现较早,前人也开展了对矿床成因的研究工作,有风化淋滤次生富集成因及双冲逆掩断裂与东西向走向断裂构造叠加控矿两种论断。通过对阳新富水金矿的成矿地质条件的重新认识,从构造热液控矿的角度分析该矿床的成因,提出该... 阳新富水金矿床发现较早,前人也开展了对矿床成因的研究工作,有风化淋滤次生富集成因及双冲逆掩断裂与东西向走向断裂构造叠加控矿两种论断。通过对阳新富水金矿的成矿地质条件的重新认识,从构造热液控矿的角度分析该矿床的成因,提出该矿床主要受燕山晚期北西向构造控制的观点,矿床成因类型应属构造蚀变岩型。 展开更多
关键词 富水金 成矿机理 构造蚀变岩型 找矿前景
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Water Filterable and Particulate Metals and Their Bioaccumulation in Prawns along Veifa Village, Central Province, Papua New Guinea
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作者 John Kia Nema Stewart Wabo Wossa +1 位作者 Basil Marasinghe Kulange John Banda 《Journal of Environmental Science and Engineering(B)》 2015年第5期282-285,共4页
Toxic metals are released into the river systems from both anthropogenic activities and natural sources. These metals are present in water as filterable and particulate metals. These metals were found to bioaccumulate... Toxic metals are released into the river systems from both anthropogenic activities and natural sources. These metals are present in water as filterable and particulate metals. These metals were found to bioaccumulate in prawn samples along Veifa stretch of the Angabanga River. The analytical results showed that As as particulate metal was high in concentration at 86 μg·g^-1 and Pb as filterable metal was high in concentration at 12 μg·g^-1. The metals Pb and As also accumulated in prawns along the Veifa stretch but were within recommended toxic metal standards. 展开更多
关键词 BIOACCUMULATION metal concentration Veifa stretch prawns.
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Comparative Assessment of the Effect of Wastewater Sludge Biochar on Growth,Yield and Metal Bioaccumulation of Cherry Tomato 被引量:9
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作者 Mustafa K.HOSSAIN Vladimir STREZOV Peter F.NELSON 《Pedosphere》 SCIE CAS CSCD 2015年第5期680-685,共6页
To investigate the potential effects of wastewater sludge and sludge biochar on growth, yield and metal bioaccumulation of cherry tomato (Lycopersicon esculentum L.), a pot experiment was carried out under greenhous... To investigate the potential effects of wastewater sludge and sludge biochar on growth, yield and metal bioaccumulation of cherry tomato (Lycopersicon esculentum L.), a pot experiment was carried out under greenhouse environment with three different treatments, control soil (CP), soil with wastewater sludge (SS) and soil with sludge biochar (SB), to reveal the comparative effect between the amendments of wastewater sludge and sludge biochar. The soil used for pot experiment was Chromosol. Wastewater sludge and sludge biochax produced through pyrolysis process at 550 ℃ were applied at 10 t ha-1. No significant difference was found in growth and production of cherry tomatoes between wastewater sludge and sludge biochar applications to the soil. The accumulation rates of metals in the fruits were lower in the treatment with sludge biochar than in the treatment with wastewater sludge. The study highlights the benefits of risk mitigation from toxic metal accumulation in fruits using wastewater sludge and sludge biochar as soil conditioners. 展开更多
关键词 fruit yield heavy metals plant height risk mitigation soil conditioner
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