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HPLC-MS/MS法测定饲料中硫酸新霉素的含量 被引量:4

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摘要 试验建立液相色谱-串联质谱仪(HPLC-MS/MS)测定饲料中硫酸新霉素含量的方法。饲料中硫酸新霉素经磷酸盐缓冲液提取,C18固相萃取柱净化,用高效液相色谱-串联质谱仪进行测定,液相色谱采用C18(100.0 mm×2.1 mm,2.4μm)色谱柱,乙腈+20.0 mmol/L七氟丁酸溶液作为流动相,梯度洗脱。质谱采用正电喷雾离子源,多反应检测(MRM)模式测定。结果表明:硫酸新霉素在0.1~5.0μg/m L质量浓度范围内线性关系良好(r=0.997 9);方法检测限为0.2 mg/kg,定量限为0.4 mg/kg;方法回收率为75.8%~98.2%。
出处 《饲料研究》 CAS 2017年第11期27-32,共6页 Feed Research
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