Melamine-promoted crystal growth of calcium oxalate monohydrate from calcium nitrate and oxalic acid

被引：13

作者：

Thanasekaran, Pounraj ^{[1
]}

Liu, Chih-Ming ^{[1
]}

Cho, Jhen-Fu ^{[1
]}

Lu, Kuang-Lieh ^{[1
]}

机构：

[1] Acad Sinica, Inst Chem, Taipei 115, Taiwan

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2012年 / 17卷

关键词：

Calcium oxalate; Crystal growth; Hydrogen-bonding; Melamine; Oxalic acid; Self-assembly; CYANURIC ACID; MASS-SPECTROMETRY; POWDERED FORMULA; STONE FORMATION; AMINO-ACIDS; CRYSTALLIZATION; URINE; CHILDREN; UROLITHIASIS; SPECTROSCOPY;

D O I：

10.1016/j.inoche.2011.12.020

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The influence of melamine with different concentrations on the spontaneous batch crystallization of calcium oxalate monohydrate was investigated. The self-assembly of different sizes of calcium oxalate monohydrate crystals was achieved by layering a mixture of ethanol-water solutions of calcium nitrate and oxalic acid with different concentrations of melamine at room temperature. The presence of melamine accelerated the growth of large-sized calcium oxalate crystals but inhibited the total weight of the crystals. Precise EDX, IR and powder X-ray diffraction analyses of the product permitted its chemical composition to be determined. Such analyses lead to the finding that the reactions produced calcium oxalate monohydrate, that their average size increases from 1.5 x 10(-3) to 4.4 x 10(-3) cm(3), while the total weight decreases from 3.6 to 1.5 mg with an increase of the amount of melamine. This finding is particularly significant for the renal and kidney failure due to the growth of large calcium oxalate monohydrate crystals in the presence of melamine. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：84 / 87

页数：4

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