血液灌流对硫线磷和硫酸阿托品的吸附作用

Objective To study on adsorption effect of cadusafos and atropine sulfate by hemoperfusion.Method Hemoperfusions were performed for sheep blood samples with cadusafos and atropineby through imitated extracorporeal closed circulating perfusion apparatus.Residual cadusafos was determined by gas chromatography and residual atropine was determined by high performance liquid chromatography.Result Dose of adsorption agent was 0.5,1.0 and 1.5 g,respectively.Two hours after hemoperfusion with membrane coated activated charcoal,clearance rate of cadusafos in 3 groups all exceeded 90%.and clearance rate of atropine sulfate was 61.9%,84.9%,88.9%,respectively.One and a half hours after hemoperfusion with HA230 absorption resin,clearance rate of eadusafos in 3 groups all exceeded 90%,and clearance rate of atropine sulfate was 88.0%,97.2%,98.4%,respectively.Three hours after hemoperfusion with membrane coated activated charcoal,The concentration ratio of cadusafos and atropine sulfate in blood promoted to 10.1 times,and the ratio was 6.7 times after hemoperfusion with HA230 absorption resin.Conclusion It suggested that cadusafos were mostly removed from blood after 1.5～2.0hours hemoperfusion with membrane activated charcoal or HA230 absorption resin.The concentration ratio of cadusafos and atropine sulfate in blood will increased after hemoperfusion.     

血液灌流对硫线磷和硫酸阿托品的吸附作用

目的 定量研究血液灌流对有机磷农药硫线磷和其解毒药阿托品的吸附作用.方法 模拟临床血液灌流装置,对含硫线磷和硫酸阿托品的血样进行灌流吸附,分别用毛细管气相色谱法和高效液相色谱法测定硫线磷和硫酸阿托品的残留量.结果 吸附剂用量为0.5、1.0和1.5 g,包膜活性炭在灌流2.0 h后硫线磷的清除率均能达到90%以上,硫酸阿托品的清除率依次为61.9%、84.9%和88.9%;HA230树脂在灌流1.5 h后硫线磷清除率都达到90%以上,硫酸阿托品的清除率也依次高达88.0%、97.2%和98.4%;包膜活性炭灌流3.0h后,硫酸阿托品与硫线磷的比值最高为灌流前的10.1倍,而HA230树脂灌流后,此比值最高为灌流前的6.7倍.结论 包膜活性炭和HA230吸附树脂血液灌流1.5～2.0 h均能清除血中大部分硫线磷,而且均能增加血中硫酸阿托品和硫线磷浓度的比值.     

血液灌流对硫线磷和硫酸阿托品的吸附作用

Objective To study on adsorption effect of cadusafos and atropine sulfate by hemoperfusion.Method Hemoperfusions were performed for sheep blood samples with cadusafos and atropineby through imitated extracorporeal closed circulating perfusion apparatus.Residual cadusafos was determined by gas chromatography and residual atropine was determined by high performance liquid chromatography.Result Dose of adsorption agent was 0.5,1.0 and 1.5 g,respectively.Two hours after hemoperfusion with membrane coated activated charcoal,clearance rate of cadusafos in 3 groups all exceeded 90%.and clearance rate of atropine sulfate was 61.9%,84.9%,88.9%,respectively.One and a half hours after hemoperfusion with HA230 absorption resin,clearance rate of eadusafos in 3 groups all exceeded 90%,and clearance rate of atropine sulfate was 88.0%,97.2%,98.4%,respectively.Three hours after hemoperfusion with membrane coated activated charcoal,The concentration ratio of cadusafos and atropine sulfate in blood promoted to 10.1 times,and the ratio was 6.7 times after hemoperfusion with HA230 absorption resin.Conclusion It suggested that cadusafos were mostly removed from blood after 1.5～2.0hours hemoperfusion with membrane activated charcoal or HA230 absorption resin.The concentration ratio of cadusafos and atropine sulfate in blood will increased after hemoperfusion.     

乳癌根治术和乳癌改良根治术后近远期疗效观察

<正> 据TNM国际分期的Ⅰ期、Ⅱ期乳癌、传统的手术方式是乳癌根治术(Halstead),近年来我院已基本采取保留胸大肌的改良根治术(paty Dyson),因为我们对这两种术式术后近期并发症进行了比较,发现保留     

血清中乐果、甲基对硫磷、甲胺磷和敌敌畏的快速高效薄层定性分析

目的建立血清中有机磷农药乐果、甲基对硫磷、甲胺磷和敌敌畏的测定方法.方法取2μl血清样品点在薄层板上,置于展开剂中展开.取出晾干后,用显色剂显色.根据斑点的颜色深浅度与标准板比较,进行半含量测定.结果血清中乐果、甲基对硫磷、甲胺磷和敌敌畏的检出限分别为5、5、10、10μg/ml,常见的农药辛硫磷、丙溴磷、水胺硫磷、马拉硫磷和氧化乐果等对测定无干扰.结论建立的方法可对血清样品直接定性和半定量测定.     

砷化镓职业健康危害研究进展

正砷化镓是一种重要的半导体材料,在航空航天、工业零件、医疗设备、电信等方面应用广泛~([1])。砷化镓的健康危害效应存在较大争议,尤其是其致癌性。国际癌症研究机构参照砷及其无机化合物,将其归类于Ⅰ类致癌物~([2]);美国政府工业卫生学家会议(American Conference of Governmental Industrial Hygienists,ACGIH)将其归为A3类(确定动物致癌物)~([3])。呼吸道是砷化     

血清中乐果的高效薄层色谱快速分析方法和气相色谱方法比对研究

目的:通过与传统的GC法作比对,验证血清中乐果的TLC法是否可行。方法:分别采用TLC法和GC法对同一批低、中、高3种浓度的乐果(血清)样品进行测定,并对2法测定结果进行统计分析。结果:秩和检验结果显示,在给定显著性水平α=0 05时,对应各组测定值均为T1 相似文献   

蔬菜中内分泌干扰物4-壬基酚和双酚A的GC-MS检测方法研究

目的建立蔬菜中内分泌干扰物4-壬基酚(4-NP)和双酚A(BPA)的GC-MS检测方法。方法样品粉碎后,超声波振荡提取,BONDELUTCH固相萃取小柱净化,二氯甲烷洗脱,无水硫酸钠脱水后BSTFA衍生,GC-MS测定。结果两种目标化合物线性范围为10~500μg/L(r=0.999),4-NP和BPA的检出限分别为0.1μg/kg和0.02μg/kg,样品平均加标回收率为85.0%~105.1%,批内、批间精密度均小于10%。结论该方法具有良好的批内和批间精密度,灵敏度高,适用于蔬菜中痕量4-NP和BPA检测。     

血清中甲基对硫磷和乐果测定的气相色谱法

目的 选用氮磷检测器(NPD)及脉冲火焰光度检测器(PFPD),建立气相色谱仪同时检测血清中甲基对硫磷和乐果的方法.方法 取1 ml血清,加入2 ml乙酸乙酯振荡、离心提取,重复3次,提取液吹氮浓缩至近干,然后准确加入1.0 ml乙酸乙酯,振荡混匀,气相色谱测定.结果 两种目标化合物在0～4.0 μg/ml浓度范围内线性关系良好,相关系数r=0.9992～0.9998;NPD和PFPD的检出限分别为0.04 μg/L和0.01 μg/L;乐果和甲基对硫磷的加标回收率分别为93%～110%和91%～102%;乐果和甲基对硫磷的批内精密度分别为1.6%～7.0%、2.6%～6.1%,批间精密度分别为5.4%～9.5%、4.7%～8.4%.结论 该方法线性范围宽,灵敏度高,精密度好,适用于职业接触和普通中毒人群血清中甲基对硫磷及乐果的测定.     

工作场所空气中丙烯酰胺的超高效液相色谱测定法

目的 建立工作场所空气中丙烯酰胺的超高效液相色谱测定方法 .方法 空气中丙烯酰胺用多孔玻板吸收管采集,样品过滤后经C18色谱柱分离,二极管阵列检测器检测.结果 丙烯酰胺在O.2～10.0?μg/ml范围内线性关系良好,相关系数r=0.9999.相对标准偏差为0.6%～0.8%.检出限为0.02μg/ml,最低检出浓度为0.004 mg/m3(以采集45 L样品计).高、中、低3种浓度平均回收率为99.O%.结论 该方法 前处理简单,测定快速灵敏,适用于工作场所空气巾丙烯酰胺的测定.