The new catalytic kinetic spectrophotometric method for Au（III） determination was developed and validated. It was based on the catalytic effect of gold on the oxidation of sudan red III by ammonium peroxodisulfate ...The new catalytic kinetic spectrophotometric method for Au（III） determination was developed and validated. It was based on the catalytic effect of gold on the oxidation of sudan red III by ammonium peroxodisulfate （（NH4）2S2O8） with nitrilo triacetic acid as an activator in microemulsion and H2SO4 medium. Under optimum conditions, there was the linearity of the calibration curve in the concentration range from 0 to 20 μg/L Au（Ⅲ） at 520 nm. The relative standard deviation was 3.0% with a correlation coefficient of 0.9986. The detection limit achieved was 9.75 × 10^-5 μg/mL. A new method using a column packed with sulfhydryl dextrose gel （SDG） as a solid-phase extractant has been developed for the preconcentration and separation of Au（Ⅲ） ions. The method has been applied to the determination of trace gold with satisfactory results.展开更多
目的探讨不同免疫抗体检测技术在临床输血中的应用价值。方法选取2019年1月至2021年1月在徐州医科大学附属医院需要进行临床输血治疗的1968例患者,分别采用微柱凝胶抗球蛋白法(microcolum gel Coomb's test,MGCT)、凝聚胺法、固相...目的探讨不同免疫抗体检测技术在临床输血中的应用价值。方法选取2019年1月至2021年1月在徐州医科大学附属医院需要进行临床输血治疗的1968例患者,分别采用微柱凝胶抗球蛋白法(microcolum gel Coomb's test,MGCT)、凝聚胺法、固相凝集法进行输血前抗体检测,以谱细胞检测为金标准,采用kappa一致性检验对比分析三种技术检测的一致性。结果MGCT和凝聚胺法检测不规则抗体与谱细胞鉴定的一致性Kappa值分别为0.84和0.72。MGCT与凝聚胺法检测不规则抗体效能的特异度及阴性预测值差异均无统计学意义(P>0.05),而MGCT检测的灵敏度、阳性预测值明显高于凝聚胺法检测,差异具有统计学意义(81.82%比72.73%,85.71%比72.73%,χ^(2)值分别为5.01、5.17,P值均<0.05)。MGCT和固相凝集法检测血小板抗体与谱细胞检测一致性的Kappa值分别为0.83和0.75。MGCT与固相凝集法检测血小板抗体效能的特异度及阳性预测值差异均无统计学意义(P>0.05),而MGCT检测的灵敏度和阴性预测值明显高于固相凝集法检测,差异具有统计学意义(90.17%比84.10%,81.19%比74.64%,χ^(2)值分别为6.53、6.11,P值均<0.05)。结论固相凝集法、凝聚胺法与MGCT比较,MGCT进行输血前免疫抗体检测效果显著,不仅可进行红细胞不规则抗体筛查,还可以进行血小板抗体筛查,值得临床推广。展开更多
文摘The new catalytic kinetic spectrophotometric method for Au（III） determination was developed and validated. It was based on the catalytic effect of gold on the oxidation of sudan red III by ammonium peroxodisulfate （（NH4）2S2O8） with nitrilo triacetic acid as an activator in microemulsion and H2SO4 medium. Under optimum conditions, there was the linearity of the calibration curve in the concentration range from 0 to 20 μg/L Au（Ⅲ） at 520 nm. The relative standard deviation was 3.0% with a correlation coefficient of 0.9986. The detection limit achieved was 9.75 × 10^-5 μg/mL. A new method using a column packed with sulfhydryl dextrose gel （SDG） as a solid-phase extractant has been developed for the preconcentration and separation of Au（Ⅲ） ions. The method has been applied to the determination of trace gold with satisfactory results.
文摘目的探讨不同免疫抗体检测技术在临床输血中的应用价值。方法选取2019年1月至2021年1月在徐州医科大学附属医院需要进行临床输血治疗的1968例患者,分别采用微柱凝胶抗球蛋白法(microcolum gel Coomb's test,MGCT)、凝聚胺法、固相凝集法进行输血前抗体检测,以谱细胞检测为金标准,采用kappa一致性检验对比分析三种技术检测的一致性。结果MGCT和凝聚胺法检测不规则抗体与谱细胞鉴定的一致性Kappa值分别为0.84和0.72。MGCT与凝聚胺法检测不规则抗体效能的特异度及阴性预测值差异均无统计学意义(P>0.05),而MGCT检测的灵敏度、阳性预测值明显高于凝聚胺法检测,差异具有统计学意义(81.82%比72.73%,85.71%比72.73%,χ^(2)值分别为5.01、5.17,P值均<0.05)。MGCT和固相凝集法检测血小板抗体与谱细胞检测一致性的Kappa值分别为0.83和0.75。MGCT与固相凝集法检测血小板抗体效能的特异度及阳性预测值差异均无统计学意义(P>0.05),而MGCT检测的灵敏度和阴性预测值明显高于固相凝集法检测,差异具有统计学意义(90.17%比84.10%,81.19%比74.64%,χ^(2)值分别为6.53、6.11,P值均<0.05)。结论固相凝集法、凝聚胺法与MGCT比较,MGCT进行输血前免疫抗体检测效果显著,不仅可进行红细胞不规则抗体筛查,还可以进行血小板抗体筛查,值得临床推广。
