Abstract： In the gas chromatographic test, diethylamineacetonitrilewater mixed solution was used as extracting solvent to dissolve cyanuric acid, its homologues and urea deposits, and the derivatization of cyanuric acid and its homologues was conducted with BSTFA reagent. The results show that cyanuric acid, ammelide and ammeline are presented in the urea deposit, which solves the problem that the thermogravimetric analyzer can not distinguish the specific components of cyanuric acid homologue in urea deposit. The thermogravimetric tests show that the main substances decomposed by urea deposits in the temperature range from 278 to 458 ℃ are cyanuric acid, ammelide and ammeline. Cyanuric acid produces a trace amount of byproducts during pyrolysis. Ammelide and ammeline produce a large amount of products which require high temperature to decompose during heating. To reduce the formation of cyanuric acid and its homologues, it is necessary to accelerate the hydrolysis rate of isocyanic acid and minimize the formation of biuret.
龙华林， 莫春兰， 莫益涛， 邱崇桓， 江明儒. 尿素沉积物中三聚氰酸及其同系物检测[J]. 江苏大学学报（自然科学版）, 2020, 41(6): 712-717.
LONG Hualin, MO Chunlan, MO Yitao, QIU Chonghuan, JIANG Mingru. Detection of cyanuric acid and its homologues in urea deposits[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2020, 41(6): 712-717.
