Beryllium dust concentration online monitoring equipment and monitoring method

Abstract

The invention discloses beryllium dust concentration online monitoring equipment and monitoring method. The beryllium dust concentration online monitoring equipment comprises an atmospheric sampler, adust concentrator, a quartz torch tube, an optical fiber spectrometer, a quadrupole mass filter, a data acquisition and processing unit, a storage battery and a display. The beryllium dust online monitoring method of the equipment comprises the following steps that: firstly, the atmospheric sampler collects an atmospheric sample and then feeds the atmospheric sample into the quartz torch tube forionization; then the ionized atmospheric sample is measured and analyzed by utilizing the optical fiber spectrometer and the quadrupole mass filter; and finally, beryllium dust concentration calculation is carried out in the data acquisition and processing unit, and the dust concentrator needs to be additionally arranged in front of the quartz torch tube when monitoring is carried out in a low-concentration beryllium dust environment. The equipment disclosed by the invention is small in size and convenient to move, can realize online monitoring of beryllium concentration in a beryllium-related place, and can be universally used in environments with higher beryllium-containing dust concentration and lower beryllium-containing dust concentration; and the method disclosed by the invention issimple to operate, and the lower limit of beryllium dust concentration monitoring can reach 0.078 [mu]g / m<3>.

Description

technical field [0001] The invention belongs to the field of environmental monitoring of beryllium-related places, and in particular relates to an online monitoring device for beryllium dust concentration and a monitoring method thereof. Background technique [0002] Beryllium is a highly toxic substance. Employees who inhale metal beryllium dust for a long time can cause occupational diseases such as acute and chronic beryllium disease and "beryllium lung" disease. When the concentration of beryllium dust in the environment exceeds 25μg / m 3 , acute poisoning within 30 minutes of inhalation; when its concentration exceeds 1 mg / m 3 When inhaled, the person who inhales it will suffer from acute pneumonia immediately, and the death rate of beryllium dust is extremely high. GBZ2.1-2007 "Occupational Exposure to Hazardous Factors in the Workplace Part 1: Chemical Hazardous Factors" stipulates that the average concentration of beryllium in the air in the work area shall not exce...

AI Technical Summary

Problems solved by technology

Even after upgrading, it is difficult to use the low concentration of beryllium dust (less than 0.5μg / m 3 ) sites for online monitoring of dust

[0004] Therefore, there is an urgent need for an on-line monitoring device and monitoring method for beryllium dust concentration, which can detect beryllium dust concentration below 1 μg / m 3 Real-time online monitoring of beryllium-related sites, making up for the measurement gap of commercially available laser dust meters

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