Enhanced Raman detection method for detecting aniline substances
A detection method, the technology of aniline, applied in the field of environmental pollution detection, can solve the problems of expensive instruments, large amount of reagents, complicated operation, etc., and achieve the effects of fast detection speed, control of pollutant discharge, and simple operation
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specific Embodiment example 1
[0029] A detection method for rapidly detecting aniline substances, specifically comprising the steps of:
[0030] (1) Preparation of nano-gold sol: Take 2.45 mL of 0.01% chloroauric acid aqueous solution in 200 mL of deionized water, stir and heat to boiling, add 1.4 mL of 1% sodium citrate solution, continue heating to 30 min, and cool to room temperature , stored at 4°C.
[0031] (2) Preparation of agglomerating agent: prepare 1M NaCl solution and store at room temperature.
[0032] (3) Preparation of aniline standard sample solution: Accurately weigh 10.00 g of aniline standard sample, dilute to 100 mL with ethanol, the concentration of this solution is 100 g / L, and then dilute to 1-0.01 mg / L step by step with deionized water.
[0033] (4) Detection of standard samples: Take 100 μL of aniline standard sample solution, 100 μL of 1M NaCl solution, and 600 μL of nano-gold sol into quartz cuvettes in turn, and test on a portable Raman spectrometer. The laser wavelength is 785...
specific Embodiment example 2
[0035] A detection method for rapidly detecting aniline substances, specifically comprising the steps of:
[0036] (1) Preparation of nano-gold sol: take 2.45 mL of 0.01% chloroauric acid aqueous solution in 200 mL of deionized water, stir and heat to boiling, add 2 mL of 1% sodium citrate solution, continue heating to 30 min, then cool to room temperature, Store at 4°C.
[0037] (2) Preparation of agglomerating agent: prepare 1M NaOH solution and store at room temperature.
[0038] (3) Preparation of 2,4-dinitroaniline standard sample solution: Accurately weigh 0.20g of 2,4-dinitroaniline standard sample, dilute to 100mL with ethanol, the concentration of this solution is 2000mg / L, and then use Ionized water was gradually diluted to 1-0.01mg / L.
[0039] (4) Detection of standard samples: Take 100 μL of 2,4-dinitroaniline standard sample solution, 150 μL of 1M NaOH solution, and 500 μL of nano-gold sol into quartz cuvettes in turn, and test them on a portable Raman spectrome...
specific Embodiment example 3
[0041] A detection method for rapidly detecting aniline substances, specifically comprising the steps of:
[0042] (1) Preparation of nano-gold sol: take 2.45 mL of 0.01% chloroauric acid aqueous solution in 200 mL of deionized water, stir and heat to boiling, add 2 mL of 1% sodium citrate solution, continue heating to 30 min, then cool to room temperature, Store at 4°C.
[0043] (2) Preparation of agglomerating agent: prepare 1M NaOH solution and store at room temperature.
[0044] (3) Preparation of 2,6-dichloro-4-nitroaniline standard sample solution: Accurately weigh 0.20g of 2,6-dichloro-4-nitroaniline standard sample, and dilute to 100mL with ethanol. It is 2000mg / L, and then diluted to 1-0.01mg / L with deionized water.
[0045] (4) Detection of standard samples: Take 100 μL of 2,6-dichloro-4-nitroaniline standard sample solution, 80 μL of 1M NaOH solution, and 700 μL of nano-gold sol into quartz cuvettes in turn, and test them in a portable Raman spectrometer. The tes...
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