Glyphosate online water quality analyzer (c3h8no5p)

Glyphosate is a non selective and non residue herbicide.   In early 2015, the World Health Organization conducted a survey on the situation in the United States, Canada and Sweden, and there was sufficient evidence to show that glyphosate may cause lymph gland cancer and lung cancer. WTF2000 glyphosate on-line water quality analyzer is based on the national standard detection method, and the detection range is 0-1mg / L. for high concentration water samples, we use the dilution water sample method for analysis. After a long time running test, all the indexes are better than the national standard. In addition, the consumption of reagents and the cost of hardware maintenance of the analyzer are much lower than those of similar products in the market.

Online petroleum analyzer

Mineral oil in water comes from industrial wastewater and domestic sewage. Petroleum Pollutants (mixtures of various hydrocarbons) in industrial wastewater mainly come from the departments of crude oil exploitation, processing and refining. Mineral oil floats on the surface of water, which affects the oxygen exchange between air and water; Oil dispersed in water can be oxidized and decomposed by microorganisms, which consumes dissolved oxygen in water and worsens water quality. Mineral oil also contains aromatic hydrocarbons with high toxicity. The determination methods of mineral oil include gravimetric method, infrared spectrophotometry (GB / t16488-1996), non dispersive infrared method, ultraviolet spectrophotometry, fluorescence method, turbidimetry, etc. Among them, gravimetric method is not limited by oil products, which is a common monitoring method. However, this method is cumbersome, low sensitivity and large error; Infrared spectrophotometry is not limited by the variety of oil products, and the results can better reflect the situation of water polluted by oil; Other methods are greatly affected by the types of oil products.

Total organic carbon (TOC)

Total organic carbon (TOC) is a comprehensive indicator of the total amount of organic matter in water body expressed by the content of carbon, and the result is expressed by the concentration of C (mg / L). Because TOC is determined by combustion method, it can oxidize all organic matter. It can reflect the total amount of organic matter better than BOD5 or cod. At present, the widely used methods for the determination of TOC are combustion oxidation non dispersive infrared absorption method (gb13193-91), conductivity method, wet oxidation non dispersive infrared absorption method, etc. The combustion oxidation non dispersive infrared absorption method is widely used at home and abroad because of its simple process, good reproducibility and high sensitivity. Because some carbonaceous organic compounds are not easy to be burned and oxidized at high temperature, the measured TOC value is often lower than the theoretical value. The principle of the subtraction method is: a certain amount of water sample is injected into a quartz tube in a high-temperature furnace. At 900-950 ℃, platinum, cobalt oxide or chromium trioxide are used as catalysts to convert organic matter into carbon dioxide by combustion and pyrolysis, and then the carbon content in the water sample is determined by infrared gas analyzer. Because at high temperature, the carbonate in the water sample also decomposes to produce carbon dioxide, so the above measurement is the total carbon (TC) in the water sample. In order to obtain the organic carbon content, two methods can be used: one is to acidify the water sample in advance, aerate it with nitrogen, remove the carbon dioxide generated by the decomposition of various carbonates, and then inject it into the instrument for determination. Another method is to use the TOC measuring instrument that both high temperature furnace and low temperature furnace have. When the same amount of water sample is injected into the high temperature furnace (900 ℃) and the low temperature furnace (150 ℃), the organic carbon and inorganic carbon in the water sample are converted into CO2, while the glass wool impregnated with phosphoric acid is installed in the quartz tube of the low temperature furnace, the inorganic carbonate can be decomposed into CO2 at 150 ℃, but the organic matter can not be decomposed and oxidized. The total carbon (TC) and inorganic carbon (IC) were measured by non dispersive infrared gas analyzer, and the difference between them was total organic carbon (TOC). TOC＝TC-IC The determination process is shown in Figure 3-40. 5 mg / L.

Permanganate index online water quality analyzer (manganese method)

Permanganate index refers to the amount of oxidant consumed in the treatment of water samples with potassium permanganate (KMnO4) as oxidant under certain conditions. This method is only suitable for the analysis and measurement of water source, drinking water and surface water. For industrial water, it is easy to use chromium COD online water quality analyzer   Take measurements. WTF2000 CODMn permanganate online water quality analyzer is analyzed by the national standard rapid digestion potassium permanganate titration method. The detection range standard is 0-50mg/l, and the range can be diluted and expanded according to the actual water sample on site (the chloride concentration shall not be higher than 300mg/l). Add quantitative potassium permanganate and sulfuric acid to the water for quick digestion. Potassium permanganate oxidizes the organic and inorganic substances, and then adds excess sodium oxalate to reduce the remaining potassium permanganate. The titration end point is to drop the standard concentration of potassium permanganate back to the solution with stable pink. The instrument automatically records the volume of potassium permanganate liquid consumption, and calculates the analysis results by the formula of built-in curve.

Online total nitrogen analyzer

Wtf2000-tn water quality analyzer is an on-line monitoring instrument for total nitrogen index of surface water and sewage. The instrument is based on the national standard or industry standard. It has the characteristics of simple operation, high degree of automation, easy maintenance and low cost of consumables. The instrument is equipped with RS485 / RS232 interface and supports Modbus protocol. It can comprehensively master its operation status and data through remote communication, and can also carry out remote control to realize remote analysis, remote calibration, remote monitoring and control Remote cleaning and other advanced functions. In addition, the instrument has its own dilution function, which can also meet the application requirements for high concentration samples. After a long time of feedback verification, the accuracy of the analysis and other indicators are better than the relevant national standards. This product is suitable for: surface water, domestic sewage, industrial wastewater, etc.

Kjeldahl nitrogen

Kjeldahl nitrogen Kjeldahl nitrogen is the nitrogen content measured by Kjeldahl method. It includes ammonia nitrogen and organic nitrogen compounds which can be converted into ammonium salt under this condition. This kind of organic nitrogen compounds mainly include protein, amino acid, peptide, peptone, nucleic acid, urea and organic nitrogen compounds with negative trivalent nitrogen, but do not include azides, nitro compounds and so on. Because most of the organic nitrogen compounds in water are the former, the content of organic nitrogen can be expressed by the difference between Kjeldahl nitrogen and ammonia nitrogen. There are many organic nitrogen compounds in domestic sewage and industrial wastewater such as food, biological products and tannery, and the main components are proteins and their decomposition products (peptides and amino acids). The key point of Kjeldahl nitrogen determination is to take an appropriate amount of water sample into Kjeldahl flask, add concentrated sulfuric acid and catalyst (K2SO4), heat and digest, convert organic nitrogen into ammonia nitrogen, then distill ammonia in alkaline medium, absorb it with boric acid solution, and determine the content of ammonia nitrogen by Spectrophotometry or titration, that is, Kjeldahl nitrogen in water sample. When organic nitrogen is to be determined directly, the water sample can be pre distilled to remove ammonia nitrogen, and then determined by Kjeldahl method. Kjeldahl nitrogen is a very significant index in evaluating the eutrophication of lakes and reservoirs.