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Determination of Nitrite and Ammonium Ion in Shrimp Cultured

Determination of Nitrite and Ammonium Ion in Shrimp Cultured

2017-03-03

In the nitrogen cycle, ammonia nitrogen is oxidized to nitrite under the action of nitrosation, and nitrite is the intermediate product of ammonia conversion to nitrate. In the middle and late stages of farming, the accumulation of large amounts of excrement of aquatic animals in the water body due to the large amount of bait, the use of disinfectants on a regular basis, the killing of harmful and...

Comparison of Ion Chromatography Conductivity Detector with

Comparison of Ion Chromatography Conductivity Detector with

2017-03-03

Comparison of Conductivity Detector and UV Detector in Ion Chromatograph and the Comparison of Different Mobile Phase in UV Detection In the chromatographic method, the components to be tested are separated by a separation column and passed into a detector (a suppressor is added to the ion chromatographic suppression conductance detection), thus selecting an appropriate one depending on the nature...

Determination of halogen - containing oxyacids in drinking w

Determination of halogen - containing oxyacids in drinking w

2017-03-03

Drinking water with chlorine disinfection, because of its low cost, good disinfection effect is widely used. However, since 1970, studies have shown that the use of chlorine disinfection in the process may produce carcinogenic by-products such as trihalomethanes, so countries are looking for a more safe and reliable alternative to chlorine disinfection methods. Currently developed countries are mo...

Determination of Anions and Cations in Dialysate by Ion Chro

Determination of Anions and Cations in Dialysate by Ion Chro

2017-03-03

Dialysis solution is a class containing a variety of ionic and non-ionic substances in the solution, with a certain osmotic pressure for rectal, abdominal or in vitro dialysis. The concentration of various components in the dialysate is not static and can be adjusted according to the plasma electrolyte level and clinical manifestation of the patient during dialysis. The main ingredients are potass...

Silane coupling agent in the chloride ion

Silane coupling agent in the chloride ion

2017-03-03

Silane coupling agent is from silicon chloroform (HSiCl3) and with reactive groups of olefins in chloroplatinic acid under the addition of, and then obtained by alcoholysis. It has KH550, KH560, KH570, KH792, DL602, DL171 these models. The silane coupling agent molecule has a reactive group capable of chemically binding to an inorganic material such as glass, silica sand, metal, and a reactive gro...

Maleic acid and oxalic acid in glyoxylic acid

Maleic acid and oxalic acid in glyoxylic acid

2017-03-03

At present, the process of producing glyoxylic acid is glyoxal HNO3 oxidation method, maleic acid (maleic acid) O3 oxidation method and oxalic acid electrolysis reduction method. The advantage of glyoxal HNO3 oxidation is that the process is mature and the degree of glyoxal reaction is high. As the HNO3 corrosion equipment, combined with nitrogen oxides pollute the environment, affect the health o...

Iodine and thiocyanate in milk

Iodine and thiocyanate in milk

2017-03-03

The outbreak of "melamine" in 2008 has made food safety in milk and dairy products the focus of attention. In addition to melamine, milk and dairy products iodide and thiocyanate also need to focus on. Iodine is the first trace of essential elements found in humans, the human body's mental development and physical development has a very important role in inadequate intake or excessive intake can c...

DOCO in the inorganic anions and cations

DOCO in the inorganic anions and cations

2017-03-03

DOPO (chemical name: 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) is a new flame retardant intermediate that has more thermal stability and chemical stability than organic phosphates High, good flame retardant properties. DOPO and its derivatives can be used as reactive and additive flame retardants, synthetic flame retardant halogen-free, smoke-free, non-toxic, non-migration, flame retarda...