砷

If operate as per production regulation,qualified non-polluted agricultural products can be produced.4 The detection rate of r-BHC in the grain is 24.0%,which is within the range of standard,other BHC isomers are not detected;No BHC in vegetables;No DDT in grain and vegetables;The total detection rate of 4 types of organic phosphor pesticides is 31% in the grain and vegetables,within which the content of dichlo rovinyldimethy 1 phosphate and dimethoate is a little bit higher than the standard,but the content of Baytex and Sunithion is lower than the staneard.5 The heavy metal detection rate in the grain and vegetables are stated respectively as following:Arsenic:none,none; Chrome:8%,72.4%; Lead:6%,13%;Cadmium:none,none; Hydrargyrum :none,none.

粮食中γ一六六六的检出率为24.0％，未出现超标现象，其他六六六异构体均未测出，蔬菜中六六六未检出，粮食和蔬菜的DDT未检出；粮食和蔬菜中的四种有机磷农药总检出率为31％，其中敌敌畏、乐果出现个别超标现象，倍硫磷和杀螟松未出现超标现象。 5、重金属在粮食和蔬菜中的检出率分别是：砷：未检出、未检出，铬：8％、72.4％铅字6％、13％，镉：未检出、未检出，汞：未检出、未检出。

The actuality of remain of pesticide、heavy metal and toxicant in T. chinensis var. mairiei The remain of pesticide、heavy metal and toxicant in T chinensis var. mairiei was investigated by GC according to the method 5.0 in European pharmacopoeia. The results showed that the kinds of pesticide remained contain: organic chlorin、organic phosphorus. The other pesticide remained were not detected. The remain of cuprum、arsenic、cadmium、hydrargyrum and plumbum and bacterium were less than the maximal capacity in the administration of food、tobacco goods、cosmetic and other commodity.

结果显示，南方红豆杉中检出的农药残留品种有：有机氯类农药滴滴涕总量0.0584mg／kg和六六六总量0.0245mg／kg、有机磷类农药毒死蜱0.0556mg／kg，其他类农药残留均未检出，南方红豆杉中农药残留水平偏低；南方红豆杉中铜、砷、镉、汞、铅5种重金属及细菌等有害物质的残留量均低于欧洲《食品、烟草制品、化妆品和其它日用品管理法》中规定的农药、重金属及有毒物质最大残留限量。

Objective: To establish a method for determination of total arsenic in soy sauce by Hydride Generation-Atomic fluorescence spectrometry.

目的：建立测定酱油中总砷的氢化物发生－原子荧光法。

And the content of mercury and arsenic was determined by means of hydride generation atomic fluorescence spectrometry.

1前言砷和汞在历年的农业部耕地地力调查中，都被列为重点监督的有害元素。

A simple method based on hydride generation-AFS for the determination of As in lead-based alloy s was developed.

建立了以HG-AFS测定铅基合金样品中砷的简单方法，研究了共存元素可能引起的干扰并成功地加以解决，优化了氢化物发生条件及仪器的工作参数。

To study the method of hydride generation atomic fluorescence spectrometry in determining the content of Total arsenic in food.

目的 应用AFS -2 3 0a型原子荧光光度计进行氢化物发生原子荧光法测定食品中总砷的研究。

According to the properties of hydrograph, constructing a arsenic-containing slag yard adjust measures to local conditions.

4可用砷碱渣制备玻璃沉清剂，变害为利，工业实践性强，有较好的社会效益。

The important oxidation states of arsenic are -3,0,+3, and +5, and all have been utilised in some way in both hydrometallurgy and water treatment.

砷的主要氧化态是：－3价、0价、＋3价和＋5价，并且全部已经被在湿法冶金法和水处理中以某种方式利用。

Results toxic test and ld 50 test showed that nata de coco strain was free from toxin.quality control system has not been established and sanitary facilities were incomplete in most fac-tories.totally54samples of nata de coco were hygienically determined.the pollution level of elements of pb,as,nitrate and nitrite was low,but chromium was relatively higher.no aflatoxin b 1 and pathogenic bacteria were detected.the residual hydrogen peroxide were detected from15out of the18samples detected.

结果 菌种毒力试验和急性毒性试验（ld 50 ）显示为无毒物；多数企业未建立卫生管理制度，卫生设施不完善；采集54份椰果样品做卫生学检测，铅、砷等重金属元素、硝酸盐、亚硝酸盐污染水平较低，铬含量相对较高，未发现黄曲霉毒素b 1 和致病菌的污染；18份椰果样品中有15份残留过氧化氢。

Results Toxic test and LD50 test showed that Nata de coco strain was free from toxin. Quality control system has not been established and sanitary facilities were incomplete in most factories. Totally 54 samples of Nata de coco were hygienically deten＇nined.

结果菌种毒力试验和急性毒性试验（LD50）显示为无毒物；多数企业未建立卫生管理制度，卫生设施不完善；采集54份椰果样品做卫生学检测，铅、砷等重金属元素、硝酸盐、亚硝酸盐污染水平较低，铬含量相对较高。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。