the mechanisms for nickel sulfide fire assay collecting precious metals were discussed. according to crystal structure and thermodynamics data of precious metals sulfide and compounds in silicate phase, precious metals tend to be in nickel sulfide phase when nickel sulfide phase is separated from silicate phase.

1、

the chemical species of platinum group elements in some upper mantle derived xenoliths from eastern china are studied by molecular activation analysis, in which the chemical stepwise dissolution, nickel fire assay preconcentration and neutron activation analysis are jointly applied.

用化学逐级溶解、镍锍火试金预富集及中子活化分析法研究了中国东部大陆地幔橄榄岩捕掳体中铂族元素的化学种态。

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2、

for the determination of au content in sn-pb-au-sb alloy with high sn content, the present paper provided a new process to solve the problem of sn interference on fire assay by smelting at high temperature and cupellation.

对锡含量高的Sn-Pb-Au-Sb合金中金含量的火试金测定，作者采用熔炼、灰吹手段，解决了Sn干扰测定结果的问题。

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3、

the effect of various factors on the determination of pt, pd, ir and au by icp-aes was investigated in detail using minified nickel sulfide fire assay preconcentration.

详细研究了硫化镍试金预富集-ICP-AES测定矿石中的Pt、Pd、Ir、Au的多种影响因素。

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4、

the preconcentration and determination of platinum, palladium, rhodium and iridium in geological samples by nickel sulphide fire assay and icp-ms were described.

建立了锍试金富集电感耦合等离子体质谱法（ICP-MS）测定地质样品中铂、钯、铑、铱的新方法。

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5、

in this paper, the method, step and requirement to determine gold and silver content of gold-bearing quartz by fire assay are described.

本文说明了用火试金法测定金块矿中金和银量的方法、步骤。

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6、

study of determination of the platinum group elements in geological samples with neutron activation analysis after preconcentration by the nickel sulphide fire assay

铂族元素镍铳试金预富集中子活化分析方法研究

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7、

determination of platinum and palladium in anode mud of copper and lead electrolysis with fire assay separation and icp-aes

火试金捕集等离子体发射光谱法测定铜铅电解阳极泥中铂和钯

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8、

the trace rh was concentrated with minified nickel sulfide fire assay before it was determined.

测定之前，痕量铑用小硫化镍试金富集分离。

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9、

determination of platinum group elements by neutron activation analysis and inductively coupled plasma-mass spectroscopy combined with fire assay preconcentration

火试金预浓集结合中子活化和电感耦合等离子体质谱法测定铂族元素

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10、

determination of trace platinum, palladium and gold in samples by icp-aes and fire assay preconcentration

小试金富集ICP-AES法同时测定试样中的铂、钯、金

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11、

study on the batching of fire assay technology for high iron high sulphur and arsenic-containing gold concentrate

高铁高硫砷金精矿火试金法配料的探讨

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12、

on the batching of fire assay of gold-containing rich ore block

含金富矿块火试金法配料的探讨

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13、

application in modern instrumental analysis method of nickel sulfide fire assay preconcentration of platinum group elements and gold

铂族元素和金的硫化镍试金预富集在现代仪器分析方法中的应用

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14、

fire assay is a direct accurate determination method that is classic and widely used in the world.

火试金法是经典的、在国内外广泛应用的、测定结果最为准确的黄金含量直接测定方法。

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15、

the other factors influencing the size of lead buttons in fire assay are also discussed.

对影响铅扣大小的其他因素进行了探讨。

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16、

discussion on oxidation-reduction equilibrium equation of lead button in fire assay

火法试金控制铅扣的氧化还原平衡方程探讨

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17、

determination of gold content in tin-lead-gold-antimony alloy by fire assay method

火试金测定锡铅金锑合金中金含量

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18、

discussion on improving operational ability of fire assay

提高火试金法可操作性的探讨

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19、

due to the special mechanism, lie detectors are playing a very important role in the activities of criminal judicature.

“测谎仪”以特殊作用机理在刑事司法活动中发挥着重要的作用。

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20、

the implications for lie detectors are profound.

这种技术对于测谎仪来说具有深远影响。

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