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solid phase extraction disks
相关语句
  固相萃取膜
     Evaluation of hydrophobicity for halogenated benzenes using C_(18) solid phase extraction disks
     利用C_(18)固相萃取膜评价有机氯污染物的亲酯性
短句来源
  相似匹配句对
     Solid Phase Microextraction
     固相微量萃取技术
短句来源
     Solid Phase Extraction
     固相萃取
短句来源
     Solid-phase Synthesis of Oligosaccharides
     固相载体法合成低聚糖
短句来源
     Solid Phase Organic Synthesis
     固相有机合成
短句来源
     Technology and Application of Solid-phase Extraction
     固相萃取技术及其应用
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  solid phase extraction disks
Radionuclide analysis using solid phase extraction disks
      
Potential of Solid Phase Extraction Disks to Aid Determination of Dislodgeable Foliar Residues of Chlorpyriphos, Malathion, Diaz
      
Two methods for the analysis of ten organophosphorus insecticides in natural waters using solid phase extraction disks containing C18 and SDB and solid phase microextraction fibers containing polyacrylate (PA) are developed.
      
Determination of pesticides in soil samples by solid phase extraction disks
      


Referring to the quality assurance and quality control procedures of U. S. EPA method 525 .1, extracting organic matter from drinking water with C18-solid phase extraction disk. The polycyclic aromatic hydrocarbons (PAHs) fraction was identified by GC-MSD. The standard curves were figured out using mixed standards of 16 PAHs, and the internal standard method was applied for the quantitative analysis of PAHs. The amount of PAHs in drinking water of a water plant was detected with this...

Referring to the quality assurance and quality control procedures of U. S. EPA method 525 .1, extracting organic matter from drinking water with C18-solid phase extraction disk. The polycyclic aromatic hydrocarbons (PAHs) fraction was identified by GC-MSD. The standard curves were figured out using mixed standards of 16 PAHs, and the internal standard method was applied for the quantitative analysis of PAHs. The amount of PAHs in drinking water of a water plant was detected with this method. The average recoveries of PAHs were between 94.0% and 97.7% , the detection limit for 7 PHAs was 0.001pg/L.

参照美国EPA525.1方法,C_(18)-固相萃取膜萃取饮用水中的有机物,利用GC/MS法鉴定多环芳烃(PAHs),使用16种多环芳烃混合标准样绘制标准曲线,以内标法对PAHs进行定量分析.采用本方法研究某水厂经过深度处理后的出厂水中的7种多环芳烃的含量,PAHs的平均回收率为94.0%~97.7%.检测限为0.001μg/L.

In this paper,factors of the partition equilibrium between C_ 18 solid phase extraction disk and water for halogenated benzenes were investigated.The C_ 18 disk/water partition coefficient was also determined.The results show that with the increase of K _ OW values,the partition equilibrium time increases.The K _ SD values is unconcerned with both the concentrations of halogenated benzenes in water and the amount of C_ 18 disks.There is a good linear relationship...

In this paper,factors of the partition equilibrium between C_ 18 solid phase extraction disk and water for halogenated benzenes were investigated.The C_ 18 disk/water partition coefficient was also determined.The results show that with the increase of K _ OW values,the partition equilibrium time increases.The K _ SD values is unconcerned with both the concentrations of halogenated benzenes in water and the amount of C_ 18 disks.There is a good linear relationship between K _ SD and K _ OW .The C_ 18 solid phase material is useful for evaluating the hydrophobicity of organic compounds.It is beneficial to predicting the baseline toxicity of the complex mixture.

采用C18 膜模拟生物体 ,探讨了化合物在膜与水相之间分配平衡的影响因素 ,测定了卤代苯类化合物的膜 /水分配系数 .结果表明 ,随着脂溶性的增加 ,化合物分配达到平衡的时间也将增加 ;C18膜 /水分配系数的大小与水相中化合物浓度的大小和C18膜量的多少无关 ;C18膜 /水分配系数 (KSD)与正辛醇 /水分配系数 (KOW)之间有较好的一致性 .C18膜材料的使用 ,为有机污染物脂溶性的评价提供了一个新的方法 ,并且这一方法为复合污染体系因脂溶性所引起的基本毒性量化预测创造了条件 .

The solid phase extraction disk developed in recent years is new method for analyzing radionuclides. Its principle is that the specific extractant is embedded in a disk of polytetrafluoroethylene fibrils and on this disk concentrating and purifying the target nuclide and preparing counting source are accomplished. In comparison with traditional radiochemical analysis method, this method is faster and more effective. Owing to the excellent dynamic character, the disk...

The solid phase extraction disk developed in recent years is new method for analyzing radionuclides. Its principle is that the specific extractant is embedded in a disk of polytetrafluoroethylene fibrils and on this disk concentrating and purifying the target nuclide and preparing counting source are accomplished. In comparison with traditional radiochemical analysis method, this method is faster and more effective. Owing to the excellent dynamic character, the disk allows the solution to pass through in high flow rate(50ml/min). It makes the disk suitable to analyze the large volume water sample. A one-liter sample may be prepared with as little as half an hour. After checking carefully it demonstrates that this method can replace the traditional radiochemical analysis in water sample monitoring. Along with spreading use of this method, money spent will be cut down greatly.

用于放射性核素测量的固相萃取片技术是最近几年开发的新技术,它的原理是在聚四氟乙烯纤维制成的薄片中嵌入特效的萃取剂,在片上完成对核素的浓集、纯化及测量源的制备。它比传统的放射化学分析法更简便快速。片子有良好的动力学特性,溶液能够在较高流速(50 ml/min)下通过片子,这使得此技术更适用于大体积水样品的分析。介绍了用一个1 L水样,应用固相萃取片可以在0 5 h内完成活度测量源的制备过程。经过仔细地检验,表明这个技术可以取代传统的放化分析方法,应用于环境监测之中。这个技术的普遍应用会节省大量的分析样品费用。

 
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