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来源：百度知道 编辑：UC知道 时间：2024/06/30 18:10:58
SAMPLE PREPARATION
Approximately 1 g of toothpaste was dissolved into 100 mL of DI water. This sample was placed on a vortex to fully disperse the toothpaste and then filtered through? a 0.45 Pm Supor (PES) membrane filter.
RESULTS AND DISCUSSION
Sodium fluoride is the most common form of
fluoride found in toothpaste. The choice of fluoride
compound is determined by its compatibility with other
ingredients. MFP is the source of fluoride in some
brands of toothpaste. The MFP breaks down to fluoride
and phosphate, and all three analytes can be easily determined by IC.
In addition, pyrophosphate may be found in some toothpastes as a tartar control agent and saccharin is often present as an artificial sweetener. Although, both the IonPac AS18 (Method A) and AS17 (Method B) were found to be ideal for the separation of the primary analytes in toothpaste (i.e., fluoride and MFP), each column has certain advantages. Forexample, the AS18 has a
Approximately 1 g of toothpaste was dissolved into 100 mL of DI water. This sample was placed on a vortex to fully disperse the toothpaste and then filtered through? a 0.45 Pm Supor (PES) membrane filter.
RESULTS AND DISCUSSION
Sodium fluoride is the most common form of
fluoride found in toothpaste. The choice of fluoride
compound is determined by its compatibility with other
ingredients. MFP is the source of fluoride in some
brands of toothpaste. The MFP breaks down to fluoride
and phosphate, and all three analytes can be easily determined by IC.
In addition, pyrophosphate may be found in some toothpastes as a tartar control agent and saccharin is often present as an artificial sweetener. Although, both the IonPac AS18 (Method A) and AS17 (Method B) were found to be ideal for the separation of the primary analytes in toothpaste (i.e., fluoride and MFP), each column has certain advantages. Forexample, the AS18 has a
1克样品制备牙膏溶解成100毫升水邸. 这个样本放在漩涡充分驱散牙膏,然后向下? 一泊尔0.45分(砜)膜过滤. 氟化钠结果与讨论是最常见的形式发现氟化物牙膏. 选择氟化物是由其与其他成分. 家庭经济来源是一些含氟牙膏品牌. 破裂的家庭经济为氟化物、磷酸盐、三分析物容易由集成电路. 此外, 焦可发现部分牙膏作为控制剂酒石作为当前和人造糖精往往 甜味剂. 虽然 无论选用电导(法)、(方法二)被证实是理想的分离 初级分析物牙膏(即家庭经济和氟化物),每栏有一定优势. ,选用具有显着的能力(285吸附/栏),其主要原因孔衬底, 相较于(30薄膜/栏). 这使更高容量选用忍受高离子强度矩阵与线性工作有一个更大的幅度比as17. 然而,强保留分析物分离,如糖精、 导致保留时间长就格外高容量阳离子分离,所以最好的低容量17 专栏. 同为两个多聚磷集团(即磷酸钠等)是最适合的电导色谱柱柱、 所述71和104. 虽然要么栏可用于分析牙膏,这主要侧重于应用说明栏中选用. 图1显示了标准的隔离柱选用典型阴离子发现牙膏,包括氟化物、 氯化物、家庭经济、硫酸、苯甲酸、磷酸. 表2显示了校准范围和相关系数为4.21%. 相关系数为主要对象分析物、氟化物、613、0.9998、0.9991均分别 分析了三种不同的牙膏含有两种有效成分,氟化物、家庭经济、活跃阴离子成分. 两牙膏(甲、乙)已为家庭经济主要来源氟化物 (三)有其他牙膏作为其活性成分有氟化钠. 表3显示了这些牙膏的平均浓度发现,基于10复制打针. 结果显示,在家庭经济比重牙膏A和B 而丙牙膏含有较多的氟化物免费,果然从产品标签. 数字2,3,4说明适用本办法牙膏一、二、三,分别 虽然没有量化,-贵州发现牙膏三,说明它是保护靼牙膏.