砷的

Clinoclasite, olivenite, cornwallite, cornuhite, conichalcite, adamite, duftite, hayldonite, mimetesite, carminite, dussertite, scorodite, Ba-bearing pharmacosiderite and heudanite. The physical properties, optical constants, chemical composition, X-ray data, infrared absorption spectra and differential thermal analyses of the minerals are given in this paper, which serve as a sheet of fairly perfect data for arsenate minerals in China.

是有疑义的矿物；而光线石、墨绿砷铜石、羟砷铜石、乳砷铅铜石、砷铅铁石、绿砷钡铁石及含钡毒铁石等是在国内首次发现的矿物；橄榄铜矿、砷铅石等在国内未见有其矿物学数据的公开报导。

Instrumental neutron activation analysis was used to measure the content of arsenic in segmented human hair samples, with and without treatment by arsenide.

采用仪器中子活化分析法对砷化物溶液浸泡人发后人发中的砷含量及未经砷化物溶液浸泡的人发中的固有砷含量进行了定量分析。

Oxygen that is evoluted in the anode and arsenic acid will have oxidation-reduction to produce arsenic acid. It can evolute a great amount of hydrog...

在铜含量较低时阴极析出大量氢气，阳极析出氧气，极大地浪费了电能；在析出氢气的同时逸出砷化氢，砷酸、亚砷酸在阴极直接发生还原反应也产生砷化氢气体，从而严重地污染了环境。

The experiments included both small and extended test. Because the Arsenic in secondary zinc oxide exists mainly in the form of arsenous oxide, which is volatile, the roasting method of adding reductant carbon to secondary zinc oxide is used to remove Arsenic.

本研究实验包括小型实验和扩大实验，由于次氧化锌中砷主要以三氧化二砷形态存在，因此可以通过三氧化二砷易挥发特性，采用在次氧化锌中加入炭还原剂的焙烧方法脱砷。

Meanwhile, the standard experiment on addition of small molecular organic arsenics revealed that the small molecular organic arsenics such as cacodylic acid, disodium methylarsonate were detected to be inorganic arsenic by the two detection methods with high recovery efficiency.

同时，试验中用小分子有机砷进行加标试验，结果表明：二甲基胂酸、甲基胂酸二钠等小分子有机砷对两种测定方法的影响很大，会把小分子有机砷作为无机砷检测出来，且检出回收率很高。

Two rice varieties, named Weiyou 402 and Eryou 416 were selected to grow in arsenic spiked soils (0, 10, 20 and 40 mg·kg-1 arsenic) and "natural" arsenic soils (1∶1 of geogenic high level arsenic soil from Guizhou province and silt loam soil from Beijing) in a greenhouse, to compare their arsenic uptake, accumulation, speciation and related health risks.

段桂兰 中国科学院生态环境研究中心，北京 100085以2个水稻品种威优402号和Ⅱ优416号为实验材料，采用温室栽培方法研究对比两个品种水稻在人工添加砷处理（0，10，20和40mg·kg-1）和模拟自然砷污染（贵州高砷土和北京褐土的混合土，质量比为1∶1）胁迫条件下的生长发育状况，分析砷在水稻不同部位的累积、形态转化及其健康风险。

Solubility and stability of calcium arsenates under different CO2 pressures are studied based on the data of precipitation and solution experiments simulated by PHREEQC program. The result shows that calcium arsenates can dissolve incongruently by the effect of CO2 in high pH（pH〉8. 3）and make their solubility higher. The higher the CO2 pressure is, the lower the acidity of the incongruent dissolution is.

文章摘要：通过沉淀和溶解两方面的实验数据，应用PHREEQC程序模拟了砷酸钙在不同CO2分压条件下溶解度的变化情况，发现环境中的CO2可使砷酸钙盐在酸度较高（pH大于8.3）的条件下发生不一致溶解，使其溶解度升高；CO2分压越大，砷酸钙盐发生不一致溶解的酸度越低；CO2主要影响3：2和5：3的砷酸钙盐，而对4：2砷酸钙盐的影响较小。

After As in WO3 is dissolved with NaOH solution, WO3 is coordinated by citric acid. In HCl medium, As is reduced to lwo valency As by KI and then low valency Asis reduced to gas AsH3 by SnO2 and metal Zn. After that, DDTC-Ag solution is applled as absorbent for colorimetric determinhtion.

用氢氧化钠溶液溶出三氧化钨中的砷之后以柠檬酸配位三氧化钨，在盐酸介质中用碘化钾将砷还原成低价砷，再用二氯化锡和金属锌将低价砷还原成砷化氢气体，以DDTC-Ag溶液吸收进行比色测定。

When the amount of sulfuric acid 1 t/t, the antionxidant (CH8O) capacity of 0.01 t/t and liquid-solid ratio at 4:1, the copper lixiviated efficiency is 94% with 250 r/min and stiring from 3 h at the nomal temperature.

调节浸出液pH为3.7~4.0后，利用固砷剂除砷固砷，砷去除率为98.54%，此时铜的损失为1.34%，除砷后的浸出液制成硫酸铜产品，铜的总收率在85%以上。

The removal of arsenic from solution has relied mostly on precipitation and adsorption processes and it has been considered that arsenic is the oxidation state that leads to the most effective removal by precipitation since the simple metal arsenates generally have lower solubility than the arsenites, and also arsenate is more strongly adsorbed on certain substrates, but this is pH dependent.

从溶液中去除砷主要依赖沉淀和吸附过程，并且要考虑+5价砷是氧化态，会导致通过沉淀最有效去除砷，因为简单的金属砷酸盐比亚砷酸盐一般有更低的溶解度，并且砷酸盐在特定情况下有更强的吸附能力，但是这取决于 pH 值。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。