砷

A very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar.

一种极具毒性的金属元素，有三种同素异性体，砷和砷的化合物用作除草剂、杀虫剂和各种合金，见于毒砂、雌黄、雄黄中。

The test results have shown that the combined depressants are distinctively effective to depress arsenopyrite and activate galena,stibnite and chalcopyrite to certain extent.

在此基础上，选择了湖南省瑶岗仙钨矿精选工段含砷高达26%的硫化矿为对象，进行天然矿石的铜-砷分离试验，获得了极好的分离效果。

This article provides the synthesis methods of high purity Arsine by arse nic,zinc and sulfuric-acid.

介绍了用砷、锌和硫酸合成高纯砷烷的方法，产品纯度为99.995%，总收率为85%。

The lake water became a part of pore water in the sediment and is gradually evolved into modern shallow groundwater, which is the main supply water for residents'living.2. Chemical characteristics of high As groundwater have been evaluated. Arsenic concentrations in shallow groundwaters from the Hetao Basin of Inner Mongolia range between 0.6 and 572μg/L.

湖泊在消亡过程中，高度浓缩的富含砷的湖水被埋藏、保存到沉积物的空隙中，成为区域地下水的一部分，经长期演化形成了今天的高砷水，也是当地居民的取水层位。2。

The research also reveals that it is difficult to get blocky metallic arsenic of industrial value by the method of electrodeposition.

因此在较低温度下实现无定形砷As粉末转晶形成块状金属砷As，具有重要的环境保护意义，同时，能源消耗较低。

Species of metallic deposits are quite complicated: Besides commonly-seen pyrite ,chalcopyrite and bornite, there exist varied copper-bismuth sulfosalt minerals(sandber}erite, Bi-tennantite, Bi-tetrahedrite, aikinite, wittichenite),tungsten-tin sulfidesand polymetallic sulfides.

金属矿物种类复杂，除常见的黄铁矿、黄铜矿、斑铜矿外，还有多种铜铋硫盐矿物（锌砷黝铜矿、铋砷黝铜矿、铋锑黝铜矿、针硫铋铅矿、硫铋铜矿）、钨锡硫化物（硫铁锡铜矿、硫钨锡铜矿）及多金属硫化物。

A new dressing technology, selective flotation separation of gold, and flotation separating pyrite from arsenopyrite with chlorinated lime as the oxidizing agent, and magnetic separation of pyrrhotite from arsenopyrite is adopted and good beneficiation indexes are achieved.

天马山矿矿石属含砷高硫难选金矿石，对该矿石进行了选矿工艺研究，采用优先浮选金、漂白粉作氧化剂氧化浮选分离黄铁矿和毒砂、磁选分离磁黄铁矿和毒砂工艺，综合回收金硫砷，取得较好选别指标。

Arsenic is the most common and hazardous environmental contaminant, affecting millions of people around the world.

砷化合物是备受关注的一类污染物，特别是饮用水中的砷污染引发了全球性的健康问题。

The toxicity of As(superscript 3+) and As(superscript 3+)+Se(superscript 4+) to Elodea nuttalli was studied.

以伊乐藻为试验材料，研究砷、砷＋硒离子对伊乐藻抗氧化酶系统的影响。

By planting plants which do not hyperaccumulate arsenic or its esculent parts contain less arsenic,resulting in decrease of arsenic into food chain.

我国云南、山西、新疆、内蒙古等地的砷污染较为严重，这主要与当地开采矿产或当地的砷背景值较高有关。

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。