新疆农业科学2017，Vol.54Issue(10)：1822-1831,10.DOI:10.6048/j.issn.1001-4330.2017.10.007
聚磷酸铵肥料聚合度与聚合率测定方法比较
Comparison of Different Measurement Methods for Determination of Polymerization Degree and Polymerization Rate of Water-soluble Ammonium Polyphosphate Fertilizer
摘要
Abstract
[Objective] As a new type of P fertilizer,it is urgent and necessary to establish suitable method to characterize the quality of water-soluble ammonium polyphosphate.However,no relevant standard determination method is available so far.[Method] In this study,methods of end-group titration and paper chromatography were used to determine polymerization degree of standard and fertilizer samples;Molybdenum blue colorimetry,molybdenum yellow colorimetry and paper chromatography were employed to determine polymerization rate of standard and fertilizer samples.[Result] The calibration curves obtained from end-group titration and paper chromatography were y =0.944,3 x +0.317 (R2 =0.999,8) and y =-0.237,6 x +0.192,5 (R2 =0.999,6),respectively,both were significantly fitted;an obvious change was found at the first jump point while there was no significant change at the second jump point,and a low detection value was gained in end-group titration method;Different forms of polymeric fractions were detected simultaneously via paper chromatography measurement,and the value determined by paper chromatography measurement was more accurate than that with end-group titration method.Regarding the measurement method of polymerization rate,it was found that the relative errors obtained from different measurement methods following the order of:paper chromatography (8.73％) ＞ colorimetry with molybdenum yellow (5.55％) ＞ molybdenum blue colorimetry (1.20％).[Conclusion] Briefly,paper chromatography and molybdenum blue colorimetry exhibit significant advantages on determination of polymerization degree and polymerization rate of water-soluble ammonium polyphosphate fertilizer,thus these could be regarded as suitable methods for characterizing the quality of polyphosphate fertilizer.关键词
聚磷酸铵/端基滴定/纸层析/钼蓝比色/钼黄比色Key words
ammonium polyphosphate/end-group titration/paper chromatography/molybdenum blue colorimetry/molybdenum yellow colorimetry分类
农业科技引用本文复制引用
高艳菊,刘腾,亢龙飞,关钰,褚贵新..聚磷酸铵肥料聚合度与聚合率测定方法比较[J].新疆农业科学,2017,54(10):1822-1831,10.基金项目
国家自然科学基金项目(41161047) （41161047）
深圳芭田公司横向课题 National Natural Foundation of China (41161047) and Horizontal Subject of Batian Ecological Engineering Stock Company of Shenzhen （41161047）
