Particle organic carbon and total organic carbon determinator and determination method

Abstract

The invention relates to a particle organic carbon and total organic carbon determinator and a determination method. The determinator and the method are characterized in that a carrier gas generator is orderly communicated with a gas purifier and a flow controller through pipelines, the flow controller is respectively communicated with a high-temperature oxidation reactor and a low-temperature decomposition reactor through pipelines, and the other end of the high-temperature oxidation reactor and the other end of the low-temperature decomposition reactor are respectively communicated with a condensation dehydrator through pipelines; the condensation dehydrator, an ion trap, a gas filter and a conductivity gauge are orderly communicated through pipelines; and the conductivity gauge is connected with a data processor through a cable. By the determinator and the method provided by the invention, the total carbon, the inorganic carbon, the particle organic carbon, the total organic carbon and so on in the solid, particle, liquid and suspension samples can be respectively determined, so that determination of the particle organic carbon in soil, sludge, organic chemical residues and so on and the total organic carbon in surface water, domestic sewage and production waste drainage is realized; and the determinator and the method are wide in measurement range and convenient to use, and can perform laboratory determination and vehicle-mounted mobile determination, thereby being worth spreading.

Description

technical field [0001] The invention relates to a method and instrument for measuring organic carbon in solid, liquid and granular objects, in particular to a particle organic carbon and total organic carbon measuring instrument and a measuring method. Background technique [0002] There are many types of organic matter, large quantity, and wide distribution. Whether it is in the sky, on the ground or underground, whether it is in the air, surface water, domestic sewage, production wastewater, soil, sediment, and residues of organic chemical production, there are traces of them. The determination methods of organic matter include biochemical oxygen demand (BOD), chemical oxygen demand (COD), total oxygen consumption (TOD), ultraviolet absorbance (UV ASM ) and total organic carbon (TOC). Biochemical oxygen demand, total oxygen consumption and ultraviolet absorbance can only measure the content of organic matter in water. Although the method of chemical oxygen demand can meas...

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Problems solved by technology

The main disadvantages are: the inability to measure particles with high salt content, such as saltwater lakes and ocean sediments, such as pesticides and residues produced in the production process of chemical fertilizers, dyes, seaification, salinization and other industries; the operating conditions are harsh, and high The purity of cylinder gas is difficult to measure on-vehicle flow or on-site; the sample to be tested should be acidified in advance to remove inorganic carbon, then dried, and then quantitatively weigh the baked sample and put it into a platinum or quartz boat with a transfer rod. The above operations The steps will cause the dry sample that has removed the inorganic carbon to absorb carbon dioxide in the air, and the weighed sample will be lost when it is poured into the platinum boat or quartz boat, resulting in a large data error; the platinum boat or quartz boat will send the sample to 980 In the high temperature zone, due to the push-pull movement of the connecting rod, the worn gasket will be oxidized into carbon dioxide and air leakage, which will affect the precision of the instrument; the infrared detector is expensive and the instrument is expensive, so it is difficult to promote

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