Total arsenic online analyzer
AMT-TAS500 total arsenic on-line analyzer adopts the new silver spectrophotometry method. Potassium borohydride produces new ecological hydrogen in acidic solution, and converts arsenic in the sample to hydrogen arsenide. Nitrate silver nitrate polyvinyl alcohol (PVA) -ethanol solution was used as the absorption solution, the silver ion in it was reduced to silver, and the solution was yellow. The absorbance was measured at 400nm wavelength and converted to the corresponding concentration value.
Successfully realized the breakthrough of "new silver salt method" from laboratory to online monitoring.
The arsenic recovery rate is high, and the actual water sample test is more accurate.
The well-designed carrier air path structure and carrier gas flow control greatly improve the measurement sensitivity and stability.
The serious influence of hydrogen arsenide generation and absorption on measurement stability at low temperature was effectively solved.
The lower limit of quantitation of the instrument is low, and it can be effectively applied to the determination of arsenic in surface water or drinking water source environment.
The ion interference is basically absent, and can be effectively applied to the measurement of arsenic in high saline soil or seawater environment.
Through exhaust gas absorption, the product is safe and reliable.