Water body nitrobenzol content measuring device and measuring method
A measuring device and technology for nitrobenzene, which are applied in the measurement of color/spectral characteristics, preparation of test samples, etc., can solve the problem of large ultraviolet absorption coefficient of nitrobenzene, low linear correlation concentration range of absorbance, and difficult concentration of nitrobenzene solution. and other problems to achieve the effect of eliminating the wall hanging effect
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Embodiment 1
[0029] The device for measuring the content of nitrobenzene in the water body comprises a shading box 1, a flow cell 2, a light source 3, a detector 4, a water tank 5, a single chip microcomputer 6, a peristaltic pump 7, a three-way solenoid valve 8, a solenoid valve 9, an ultrasonic vibrator 10, a A water pipe 11, a second water pipe 12, a third water pipe 13, a fourth water pipe 14, and a fifth water pipe 15;
[0030] The flow cell 2 is fixed in the light-shielding box 1, the light-shielding box 1 and the flow cell 2 are sealed boxes, the flow cell 2 has at least two sides along the direction of the light path, and the light source 3 is fixed in the flow cell 2 The inner surface of the light-shielding box 1 corresponding to the upper center of the light-transmitting side, the detector 4 is fixed on the inner surface of the light-shielding box 1 directly below the light source 3, and the ultrasonic vibrator 10 is placed in the flow cell 2;
[0031] The peristaltic pump 7 is f...
Embodiment 2
[0034] This water body nitrobenzene content measurement method, adopts the measuring device of embodiment 1 to finish, and the nitrobenzene solution of configuration 20ppm is as the water sample to be tested, and its steps comprise:
[0035] a. Set the nitrobenzene concentration as the ultraviolet absorption spectrum A of 10ppm as the standard spectrum, and select 240nm as the measurement wavelength λ 0 , the measured volume capacity of the flow cell is V=158ml;
[0036] b. Turn on the switch of the single-chip microcomputer, and the single-chip microcomputer starts the light source and the detector in sequence to obtain the original light intensity I when there is no water sample 0 =2893;
[0037] c. The single-chip microcomputer starts the peristaltic pump, controls the three-way solenoid valve, and after the water sample to be tested is pumped into the flow cell, the single-chip microcomputer starts the light source and the detector again to obtain the transmitted light in...
Embodiment 3
[0040] This water body nitrobenzene content measurement method, adopts the measuring device of embodiment 1 to finish, and wherein light source changes deuterium lamp into, the nitrobenzene solution of configuration 35ppm is as the water sample to be measured, and its steps comprise:
[0041] a. Set the nitrobenzene concentration as the ultraviolet absorption spectrum A of 10ppm as the standard spectrum, and select 250nm as the measurement wavelength λ 0 , the measured volume capacity of the flow cell is V=158ml;
[0042] b. Turn on the switch of the single-chip microcomputer, and the single-chip microcomputer starts the light source and the detector in sequence to obtain the original light intensity I when there is no water sample 0 =4489;
[0043] c. The single-chip microcomputer starts the peristaltic pump, controls the three-way solenoid valve, and after the water sample to be tested is pumped into the flow cell, the single-chip microcomputer starts the light source and t...
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