查询词典 contaminants

For water containing serious industrial contaminants, like that at Lampoldshausen, they use iron sulphate as the catalyst and add a small amount of hydrogen peroxide and sulphuric acid to assist the process.

像Lampoldshausen等地，由于水中含有危险的工业污染物，他们使用硫酸铁作为催化剂，并添加少量的过氧化氢和硫酸协助净化过程。

Other contaminants in water can be removed by allowing bacteria to absorb them in large lagoons or beds.

在大型污水池或污泥床中，可以通过细菌体吸附除去重金属和其它水中的污染物。

Heavy metals and other contaminants in water can be removed by allowing bacteria to absorb them in large lagoons or beds.

在大型污水池或污泥床中，可以通过细菌体吸附除去重金属和其它水中的污染物。

In the contaminated lard sample, 6 organic compounds have been thus identified to be the raw materials or byproducts in the production of organic tin compounds. Based on the identified contaminants, it can be postulated that the chemical structure of the organic tin compound is dibutyltin-bis-(2-isooctyl thioacetate). The method is simple and precise, and has not been reported in the local literature.Keywords Organic tin compound, Lard, SPME－GC－MS

经过摸索研究，采用固相微萃取方法富集挥发性杂质，直接注入色谱中，经色谱分离，质谱测定，确定了杂质的结构，由杂质成分推断生产有机锡所用的原料，然后判断合成路线，最后确定有机锡的结构，从有毒猪油中鉴定出2－巯基醋酸异辛酯、双（2－醋酸异辛酯）二硫、双醋酸异辛酯硫醚等6种与有机锡有关的杂质，并与相应的有机锡工业品对照，发现工业品中也含有这些杂质，与其合成过程的原料及副产物相符，从而确定有机锡化合物为二硫代醋酸异辛酯二丁基锡。

P.O.U. systems are by far the best way to ensure the highest quality water since many water-borne contaminants come from the plumbing in your house, especially lead and vinyl chloride from the piping.

P.O.U点置系统是迄今为止确保最佳品质用水的最佳方法，因为许多水中的污染物源於家中的管线，包括来自水管的铅和氯乙烯。

Types of pollutants which are negatively impacting health include litter, toxic chemicals, nuclear waste, lead, spoil from mining, food and water contaminants; and the polluting effects of overpopulation.

对人类健康有负面影响的污染物之种类有废弃物、毒性化学物质、核废料、铅、从采矿、食物产生的废弃物，和水污染物；和人口过剩的污染影响。

After being returned to a liquified pulp state, these contaminants must be removed before further refining can begin.

在恢复成液化纸浆状态后，在开始进一步的精制前，必须清除这些污染物。

It took several years to develop an industrial purification process that removed contaminants such as PCBs (polychlorinated bi-phenyls), pesticides, cholesterol, polyunsaturated fatty acids, and vitamins A and D from the shark liver oil, while at the same time concentrating the alkylglycerols without destroying them.

花了好几年，人们才推出了纯化工艺，以除去鲨鱼肝油中的PCBs，农药，胆固醇，多不饱和脂肪酸，维他命A和维他命D等杂质，同时使alkylglycerols得到浓缩却不受破坏。

Air pollution :空气污染 Air that has become saturated with harmful chemicals, carbon monoxides, dust, and other contaminants.

充满有害化学物质、一氧化碳、灰尘和其它有害物质的空气。

Air pollution :空气污染Air that has become saturated with harmful chemic als, carbon monoxides, dust, and other contaminants.

充满有害化学物质、一氧化碳、灰尘和其它有害物质的空气。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。