CAJ | 학술논문

甜菜碱含量的测定方法有很多种,包括酸碱滴定法、紫外分光光度法、高氯酸非水滴定法、离子色谱法等.各种方法均有其优缺点,综合考虑,离子色谱法与非水滴定法的测定结果较好.为比较这两种方法哪种更准确、更方便,设计如下实验.选取5种含量不同的甜菜碱产品,分别用非水滴方法和离子色谱法测定5种产品的甜菜碱含量.实验结果表明,离子色谱法测定的甜菜碱含量与真实值较接近,非水滴定法测定的甜菜碱含量比真实值偏高.
첨채감함량적측정방법유흔다충,포괄산감적정법、자외분광광도법、고록산비수적정법、리자색보법등.각충방법균유기우결점,종합고필,리자색보법여비수적정법적측정결과교호.위비교저량충방법나충경준학、경방편,설계여하실험.선취5충함량불동적첨채감산품,분별용비수적방법화리자색보법측정5충산품적첨채감함량.실험결과표명,리자색보법측정적첨채감함량여진실치교접근,비수적정법측정적첨채감함량비진실치편고.
There are a variety of betaine content determination methods, including acid-base ti?tration, UV spectrophotometry, perchloric acid non-aqueous titration, ion chromatography. These methods have their advantages and disadvantages, considering the measurement results, non-aqueous titration and ion chromatography are better. To compare these two methods which is more accurate, more convenient, the following experiment is designed. Five kinds of different levels of betaine products are selected, which are determined by non-aqueous titration and ion chromatographic method respectively. The experimental results show that the ion chromatograph?ic determination of betaine content is closer to the true value. The result of perchloric acid titra?tion method for the determination of betaine content is higher.