二氧化硫

The method of preparing acetaldehyde oxime is developed with hydroxycamine sulfate from sodium nitrite and sulfur dioxide,and the optimal condition is also given.

研究了以亚硝酸钠和二氧化硫为原料，经硫酸羟胺合成乙醛肟的方法。

Through the research on the determination of SO2 in white granulated sugar by pararosaniline hydrochloride method, the sources of uncertainty components were analyzed, and the individual uncertainty values were evaluated, the expanded uncertainty of the m

摘要通过对盐酸副玫瑰苯胺法测定白砂糖中二氧化硫的测定过程进行研究，分析了该法测定结果的不确定度分量及其来源，确定了各不确定度分量值，给出了该法的扩展不确定度。

The method of using formaldehyde buffer solution a b sorption-hydrochloric pararosaniline spectrophotometry to determine sulfur diox ide in air has higher sensitivity and good selectivity,and prevents from adoptin g mercurial absorbent.But the conditions in lab are not well controlled,the v alue of reagent blank and standard curvilinear slope can't accord with the one s tipulated in"Methods for Air and Waste Gas Monitoring and Analysis".Some opra tional techniques for SO2 determination in lab are introduced for reference.

文摘：以甲醛缓冲溶液吸收-盐酸副玫瑰苯胺分光光度法测定空气中的二氧化硫，方法灵敏度高，选择性好，避免了使用含汞的吸收液，但如果实验条件控制不好，试剂空白值及标准曲线的斜率就会不符合《空气和废气监测分析方法》中规定的值，本文着重从操作技巧方面对二气化硫测定的实验室质量控制进行分析，仅供参考。

The existence and uniform boundedness of the global solutions of the model for sulphur dioxide oxidation in a tubular reactor with periodic flow reversal are proved by the invariant domain method.

利用不变区域方法，证明了二氧化硫催化氧化管式反应器流向变换强制操作模型整体解的存在性和一致有界性。

Sulfur dioxide is one of primary air pollutant.

二氧化硫是造成大气污染的主要因素之一。

Or SO2 / SO32 can turn acidified potassium dichromate solution from orange to green.

二氧化硫/亚硫酸根离子可把酸化重铬锰酸钾溶液由橙色变成绿色。

Pyrolusite powder slurry, and sulfur dioxide gas exposure, and also with the milk of lime reaction can be obtained.

用软锰矿粉的浆料，与二氧化硫气体接触，再与石灰乳反应也可制得。

Second, Pyrometallurgical, available blast furnace, shaft furnace, rotary furnace, reverberatory furnace and take them two or three kinds of combination, but there are common problems in the smelting process, the emissions of a large number of products containing lead, sulfur dioxide and other harmful ingredients dust smoke, dust need to configure the corresponding device.

二，火法，可用高炉，竖炉，旋转炉，反射炉，把他们两个或三个种的组合，但也有在冶炼过程中常见的问题，一个含有铅，二氧化硫大量产品的排放量，其他有害成分粉尘烟尘需要配置相应的设备。

Between January 2010 and January 2013, at its four production facilities in Beaumont, Texas; Shreveport, La.; Tulsa, Okla.; and Riverton, Wyo., Chemtrade will upgrade existing pollution control equipment called scrubbers to meet new, lower emission limits for sulfur dioxide.

化工贸易厂的4条生产线分别设在德克萨斯州的博蒙特市；路易斯安那州的什里夫波特市；俄克拉何马州的塔尔萨市和怀俄明州的里弗敦市。2010年1月至2013年1月，该化工贸易厂将升级现有的污染控制设备称，以满足新出台的降低二氧化硫排放限制。

The colour of the sulphur dioxide/rosaniline complex is determined photometrically at a wavelength of 570 nm.

二氧化硫/玫瑰苯胺络合物的颜色以波长570 nm进行光学测定。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。