Online mercury ion analyzerMeasurement range Hg: 0-60ppb (range can be expanded)

Principle: Under acidic conditions, mercury ions react with the added Rhodamine B solution to form an orange red chelate, which is then stabilized by coloring with nitric acid and PVA. The absorbance is measured at a wavelength of 600nm, and the mercury content in water is calculated using the standard curve method.

Online mercury ion analyzerdata collector:

Single chip data acquisition values

♦Data output function:

Ethernet (standard), USB serial port interface, RS232, RS485 (MODBUS communication protocol)

Signal status:

Correcting passive points, maintaining contacts, remote/local contacts, starting analysisanalysisReset, analysis waiting, analysis pause.

Mercury and its compounds are highly toxic substances, especially organic mercury compounds. Natural water contains very little mercury, generally not exceeding0.1μg/LThe standard limit for drinking water in China is0.001mg/L.

The determination of mercury mainly includes cold atomic absorption method（GB/T7468-87）Cold atomic fluorescence method and dithizone spectrophotometric method（GB/T 7469-87）。

Mercury atomic vapor pairs253.7nmUV light has selective absorption. Within a certain concentration range, the absorbance is directly proportional to the mercury concentration.

After the water sample is digested, various forms of mercury are converted into divalent mercury. Then, stannous chloride is used to reduce divalent mercury to elemental mercury. The generated mercury vapor is carried into the absorption cell of the mercury analyzer using a carrier gas to measure the absorbance, which is then compared quantitatively with the absorbance of the mercury standard solution.

Working process of cold atomic absorption mercury analyzer

Working principle of cold atomic fluorescence mercury analyzer

1.Low pressure mercury lamp;2.Quartz spotlight;3.Absorption excitation pool;4.Photomultiplier tube;5.amplifier

6.Indicator table;7.Recorder;8.Flowmeter;9.Restoration bottle;10.Fluorescence pool;11.Vacuum pump

basic operation

The analyzer has successfully passed a series of tests for installation and setup. During installation, simply connect the reagent, sample, waste liquid pipeline, and power cord, and set the parameters to start. Automatic calibration, automatic cleaning, automatic testing, and automatic data saving. Long term self-control, low maintenance, low operating costs, fully automatic operation, low chemical consumption, short preparation time, simple maintenance, no need for special electrician training.