[Objectives]To optimize the determination method of oleandrin and adynerin in blood. [Methods]High performance liquid chromatography-mass spectrometry( HPLC-MS/MS) was applied to determine oleandrin and adynerin in bl...[Objectives]To optimize the determination method of oleandrin and adynerin in blood. [Methods]High performance liquid chromatography-mass spectrometry( HPLC-MS/MS) was applied to determine oleandrin and adynerin in blood. The blood sample was dispersed and fixed on a solid phase supported liquid-liquid extraction column and eluted with ethyl acetate. The resulting eluent was used for chromatographic separation with Kinetex C_(18) column as the separation column and gradient elution was performed using 10 mmol/L ammonium formate solution containing 0. 1%( volume fraction) formic acid and acetonitrile as the mobile phase. In the tandem mass spectrometry analysis,the detection was carried out using the electrospray positive ion source multiple reaction monitoring mode. [Results] The mass concentration of oleandrin and adynerin showed linear relationship in the range of 2-100 μg/L. The limit of detection( 3 S/N) of the method was 0. 5 μg/L.A blank sample was used as the substrate for the spike recovery test. The recovery rate was in the range of 90. 0%-98. 0%,and the relative standard deviation( RSD) of the measured values( n = 6) was in the range of 2. 1%-7. 3%. [Conclusions]The method established in this experiment has the benefits of simple pretreatment,good recovery,high sensitivity and strong specificity,and is expected to provide an ideal method for the determination of such drugs in blood.展开更多
目的建立环境水样中大环内酯类、氟喹诺酮类、林可胺类、β-内酰胺类及四环素类5类共14种抗生素的固相萃取-高效液相色谱串联质谱法(SPE-HPLC-MS/MS)的测定方法。方法处理后的水样使用亲水-亲酯(HLB)固相萃取小柱进行目标物富集,以甲醇...目的建立环境水样中大环内酯类、氟喹诺酮类、林可胺类、β-内酰胺类及四环素类5类共14种抗生素的固相萃取-高效液相色谱串联质谱法(SPE-HPLC-MS/MS)的测定方法。方法处理后的水样使用亲水-亲酯(HLB)固相萃取小柱进行目标物富集,以甲醇洗脱,洗脱液氮气吹干复溶,采用HPLC-MS/MS进样分析。以乙腈-0.1%甲酸水溶液为流动相梯度洗脱,CAPCELL PAK C18柱为分析柱,采用电喷雾正离子模式电离,多反应监测模式扫描,外标法定量。结果14种抗生素分别在(2.0~1000)μg/L浓度范围内,具有良好线性关系,方法检出限分别为(0.1~0.2)ng/L;分别以阴性水样及河水作为基质,14种抗生素的加标平均回收率分别为68.3%~96.1%和64.2%~113.3%,相对标准偏差(n=6)分别为1.7%~11.4%和1.5%~9.5%;方法应用于东莞市东江水的检测分析,结果检出6种抗生素,质量浓度范围分别为(2.49~46.7)ng/L。结论本法灵敏、准确,可应用于环境水样中多种抗生素的检测。展开更多
基金Supported by Project of National Natural Science Foundation(81273346)
文摘[Objectives]To optimize the determination method of oleandrin and adynerin in blood. [Methods]High performance liquid chromatography-mass spectrometry( HPLC-MS/MS) was applied to determine oleandrin and adynerin in blood. The blood sample was dispersed and fixed on a solid phase supported liquid-liquid extraction column and eluted with ethyl acetate. The resulting eluent was used for chromatographic separation with Kinetex C_(18) column as the separation column and gradient elution was performed using 10 mmol/L ammonium formate solution containing 0. 1%( volume fraction) formic acid and acetonitrile as the mobile phase. In the tandem mass spectrometry analysis,the detection was carried out using the electrospray positive ion source multiple reaction monitoring mode. [Results] The mass concentration of oleandrin and adynerin showed linear relationship in the range of 2-100 μg/L. The limit of detection( 3 S/N) of the method was 0. 5 μg/L.A blank sample was used as the substrate for the spike recovery test. The recovery rate was in the range of 90. 0%-98. 0%,and the relative standard deviation( RSD) of the measured values( n = 6) was in the range of 2. 1%-7. 3%. [Conclusions]The method established in this experiment has the benefits of simple pretreatment,good recovery,high sensitivity and strong specificity,and is expected to provide an ideal method for the determination of such drugs in blood.
文摘目的建立环境水样中大环内酯类、氟喹诺酮类、林可胺类、β-内酰胺类及四环素类5类共14种抗生素的固相萃取-高效液相色谱串联质谱法(SPE-HPLC-MS/MS)的测定方法。方法处理后的水样使用亲水-亲酯(HLB)固相萃取小柱进行目标物富集,以甲醇洗脱,洗脱液氮气吹干复溶,采用HPLC-MS/MS进样分析。以乙腈-0.1%甲酸水溶液为流动相梯度洗脱,CAPCELL PAK C18柱为分析柱,采用电喷雾正离子模式电离,多反应监测模式扫描,外标法定量。结果14种抗生素分别在(2.0~1000)μg/L浓度范围内,具有良好线性关系,方法检出限分别为(0.1~0.2)ng/L;分别以阴性水样及河水作为基质,14种抗生素的加标平均回收率分别为68.3%~96.1%和64.2%~113.3%,相对标准偏差(n=6)分别为1.7%~11.4%和1.5%~9.5%;方法应用于东莞市东江水的检测分析,结果检出6种抗生素,质量浓度范围分别为(2.49~46.7)ng/L。结论本法灵敏、准确,可应用于环境水样中多种抗生素的检测。
