浸酸

The chemical speciation of elemental sulfur impacted by various SOB was very poorly investigated, further research may provide theoretical support to the elucidation of sulfur metabolism of acidophilic SOB.

有关嗜酸硫氧化细菌作用下硫的形态研究十分缺乏，进一步开展嗜酸硫氧化细菌作用下元素硫化学形态的研究可以为这类细菌的硫氧化机制及对硫化矿的浸出机理的阐明提供理论依据。

The affects of oxidant dosage,residual acid concentration and leaching time on leaching efficiency of tellurium were studied.

采用氧化酸浸的方法从铜电解阳极泥处理过程中产生的综合渣中浸出碲。

Therefore, this study can provide the basis for dealing with acid leaching time of uranium ore.

结果表明：多元线性回归分析方法简单、误差较小、简便可靠，能如实地反映酸法浸出情况，进而为处理铀矿石选择适宜的酸度和浸出时间提供了依据。

It has good control effect, and its action mode has stomach poison, contact killing, antifeedant, fumigation and anesthetization.

发明人多年来对雷公藤根、茎、叶等植物组织用酸水提取法、乙醇提取法、氯仿热提甲醇沉淀法提取的浸提物进行了杀虫谱和杀虫效果的研究，发现雷公藤浸提物对众多农业害虫和园林树木害虫具有较好的防治效果，其对害虫的作用方式有胃毒作用、触杀作用、拒食作用、熏蒸作用、麻醉作用。

With a purity of 94.1% and 74% respectively, voltaite crystal and solid FeCl3 have been produced by crystallizing in a lower temperature following the vaporization of the wastewater, with 70% iron and 96.5% potassium recovered. No need of high temperature and pressure, and with high efficiency, low energy loss and less pollution, this process proves its effectiveness.

用硫酸酸浸废液蒸发结晶后，铁的回收率为70%，钾的回收率为96.5%，整个工艺无需高温，无需加压，操作简单，具有高效、低能耗、低污染的特点，表明用本项技术处理酸浸废液行之有效。

The lixiviated liquid is treated by D290 resin .

对焙烧后的含钒石煤酸浸后的浸出液采用 D290树脂处理。

The methods of extracting and refining tellurium presently were mainly soda roasting,autoclaving in general basic solution,sulfating roasting,oxidative leaching in acid solution, solvent extraction ,emulsion liquid membrane,microbial method,electrorefining,vacuum distillation and zone melting etc.

目前分离提纯碲的方法主要有苏打粉焙烧法、碱性高压浸出法、硫酸化焙烧法、氧化酸浸法、萃取法、液膜法、微生物法、电解精炼法、真空蒸馏法、区熔精炼法等，其中电解精炼法得到的碲的纯度达到99.99%，真空蒸馏碲的纯度达到99.999%，区熔精炼碲的纯度可达99.999995%，本文综述了以上分离提纯碲的方法。

The copper anode slime produced in one copper smelter domestically was pre-treated with pressure acid leaching method and the leaching behavior of copper,tellurium and selenium in copper anode slime was studied.

以国内某铜冶炼厂所产的铜阳极泥为原料，采用加压酸浸的方法对该铜阳极泥进行预处理，对铜阳极泥中铜、碲、硒等元素的浸出行为进行了研究。

A detailed study has been made on comprehensive recovery of Au、Ag、Cu and elemental sulfur from a copper-bearing gold concentrate.

对铜金精矿热压酸浸-萃取-电积提取铜、浸铜渣氰化提取金银和煤油溶解提取元素硫的综合回收工艺进行了研究。

Regrinding of acid-leach residue can increase gold leaching rate effectively and resolve the sediment problem.

采用酸浸渣再磨可有效地提高金的氰化浸出率，并解决氰化槽沉积问

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。