| | 加工定制：是 | | 品牌：浩瀚色谱 | | 型号：XiangyingGC7990plus | |
| | 测量范围：ppm | | 测量对象：乳品中三聚氰胺含量 | | 控温范围：450 ℃ | |
| | 功率：2000 w | | 尺寸：480 mm | | 重量：45 kg | |
| | 白酒：乳品中三聚氰胺含量 | | 芝麻香白酒：3-甲硫基丙醇 | | 液化气：二甲醚 | |
| | 汽油：柴油 | | 煤油：含氧化合物 | | | |
Tengzhou City Xiangying Analysis Technology Co., Ltd. to establish a determination of melamine in dairy of XiangyingGC7990plus gas chromatography analysis method.
Methods: by acetonitrile extraction of melamine in dairy products by - 20 DEG C stratified chilled further removal of protein, fat and other matrix, the supernatant was dried by liquid nitrogen, silylation, by gas chromatography FID detector analysis.
Results by external standard method for quantitative analysis and the method in the 0.5 ~ 10 mg / L concentration range with good linear relationship, and the recovery rate was 86.7% ~ 116.0% in between, the correlation coefficient R ^ 2 of 0.9998, relative standard deviation less than 6.2%, the detection limit is 0.1 mg / L.
. conclusion: through and national standard detection method of the measured results are compared and verified to determine the method in the ordinary gas phase chromatograph general FID detector complete determination, with high accuracy and reproducibility, strong practicability, easy promotion and popularization advantages, can meet the needs of the grassroots daily laboratory detection of dairy products of melamine in work.
滕州市翔鹰分析技术有限公司建立一种乳品中三聚氰胺含量的XiangyingGC7990plus气相色谱分析方法。
方法：通过乙腈提取乳品中的三聚氰胺,采用-20℃冷冻分层进一步去除蛋白质、脂肪等基质,取上清液氮吹干,硅烷化衍生,再由气相色谱仪的FID检测器分析。
结果：采用外标法定量,该方法在0.5～10 mg/L浓度范围内有良好的线性关系,加标回收率在86.7%～116.0%之间,相关系数r^2为0.9998,相对标准偏差不大于6.2%,方法检测限为0.1 mg/L。
结论：通过与国标检测方法测得结果相比较、验证,确定该方法能在普通气相色谱仪的通用检测器FID上完成分析测定,具有准确性高、重现性好、实用性强、容易推广和普及等优点,可满足广大基层实验室日常检测乳品中三聚氰胺的工作需求。
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Methods: by acetonitrile extraction of melamine in dairy products by - 20 DEG C stratified chilled further removal of protein, fat and other matrix, the supernatant was dried by liquid nitrogen, silylation, by gas chromatography FID detector analysis.Results by external standard method for quantitative analysis and the method in the 0.5 ~ 10 mg / L concentration range with good linear relationship, and the recovery rate was 86.7% ~ 116.0% in between, the correlation coefficient R ^ 2 of 0.9998, relative standard deviation less than 6.2%, the detection limit is 0.1 mg / L.. conclusion: through and national standard detection method of the measured results are compared and verified to determine the method in the ordinary gas phase chromatograph general FID detector complete determination, with high accuracy and reproducibility, strong practicability, easy promotion and popularization advantages, can meet the needs of the grassroots daily laboratory detection of dairy products of melamine in work.滕州市翔鹰分析技术有限公司建立一种乳品中三聚氰胺含量的XiangyingGC7990plus气相色谱分析方法。
