Fluorescence analysis method for determining paranitroaniline in water sample

• Main Authors: WANG QUANKUN, ZHOU SU, YE CUNLING, WANG XUEYUAN, WANG ZHIKE, CHEN ZHIHANG, FAN SHUNLI, CHEN YA'NAN, CHEN LINGYUN
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2024
• Subjects: ADHESIVES; CHEMISTRY; DYES; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MEASURING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PHYSICS; POLISHES; TESTING

The invention discloses a fluorescence analysis method for determining paranitroaniline in a water sample, the detection of paranitroaniline in the water sample is realized based on a sulfur quantum dot fluorescent probe, and the specific preparation process of the sulfur quantum dot fluorescent probe is as follows: adding thiourea, a NaOH solution, H2O and 1, 3, 5-benzene tricarboxylic acid into a reaction container in sequence at room temperature and stirring for reaction; the preparation method comprises the following steps: dissolving p-nitroaniline in TMA, dropwise adding a hydrogen peroxide solution, fully and uniformly mixing, and then stirring and reacting at 80 DEG C to finally prepare the sulfur quantum dot fluorescent probe SQDS-TMA. Based on the high-selectivity fluorescence quenching effect of p-nitroaniline on the sulfur quantum dot fluorescent probe, the invention provides a simple, low-cost and high-sensitivity p-nitroaniline fluorescence determination method. And the method is successfully ap