硫化物测定试剂盒（专利号：ZL2008 2 0200353.6）
Sulfide Test Kit
DPD Method
产品介绍：
水中的硫化物包括了H2S，HS－，S2－，主要存在于悬浮物中可溶性硫化物、酸可溶性金属硫化物以及未电离的有机无机类硫化物。
环境水源中通常包含有硫化物，其中的一部是在厌氧条件下的，由于细菌的作，使硫酸盐还原生成的或含硫有机物分解而产生。硫化氢易从水中散逸到空气中，产生臭味，且毒性很大，它可以与人体内细胞色素、氧化酶及该类物质的二硫键作用，影响细胞氧化过程，造成细胞组织缺氧，危及生命的安全，硫化氢除自身能腐蚀金属外，还可被污水中的生物氧化硫酸，进而腐蚀下水道，因此，硫化物是水体污染的一个重要指标。另外在养殖用水体的，浓度过高的硫化氢可能会造成水中生物的中毒或死亡，所以对于养殖行业，水中的硫化物浓度的监控是保证水中生命安全的重要指标之一。
广东环凯微生物科技有限公司成功推出水中硫化物快速测试盒，方法等同于N，N－二乙基对苯二胺分光光度法（GB／T5750.6－2006），可以快速准确的检测水体中硫化物含量的浓度，
检测范围：0.02-0.05-0.1-0.2-0.4-0.5-0.6-0.8mg/L
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Sulfide Test Kit（DPD Method）
Background of development
Sources of sulfide
Ground water (especially hot spring water) and domestic sewage usually contain sulfides, some of which are produced by decomposition of sulfur-containing organic compounds or sulfate reducing due to the role of bacteria under anaerobic condition. Industrial wastewater coming from industrial and mining enterprises, such as coking, gas, ore dressing, dyeing, tanning and etc., also contain sulfides.
Sulfides in water mainly include H2S, HS- and S2-. Sulfides existing in suspensions are soluble sulfides, acid-soluble metal sulfides and the non-ionized organic, inorganic sulfides.
Significance of sulfide test
Hydrogen sulfide can easily dissipate from the water into the air, producing the stink smell and with high toxicity. It can react with the disulfide bonds of oxidase, cytochrome in human body and other such substances, affecting the oxidation process of cellular, resulting in tissue hypoxia and endangering human life. In addition to its own capability of corrosion of metals, hydrogen sulfide can also be oxidized into sulfuric acid by the biology in sewage, thus eroding the sewer. Therefore, the sulfide is an important indicator of water pollution (clean water, olfactory threshold for hydrogen sulfide is 0.035μg / L).
Principle
This method equals to N, N-diethyl-p-phenylenediamine (DPD) method (GB/T5750.6 -2006). In the presence of high-iron ions, sulfides react with N, N-diethyl-p- phenylenediamine to form a blue complex.
Features of product
Quick and easy
Operating in accordance with the instructions, users can complete the sulfide test independently without specialized training. Five minutes is enough to complete the analysis of one water sample.
Accurate and reliable
Determination results with this method are in accordance with the results with the standard method. It can be used as an alternative method to the standard method.
The range of the determination: 0.02～0.8mg/L. If the concentration is out of the range, please repeat the operation after appropriate dilution of the water sample.
Quantitative packing
The kit can be used for 50 times. It is small in size, light of weight and easy to carry.
Application areas
This product can be used in analysis of sulfide in drinking water, surface water, fishery water, wastewater and etc..
