Two kinds of bactericidal and adsorptive cotton fibers(BACF 1,BACF 2) were made through epoxidation, amination and quaternarization. Which were associated with the test of their bactericidal activity and adsorption ca...Two kinds of bactericidal and adsorptive cotton fibers(BACF 1,BACF 2) were made through epoxidation, amination and quaternarization. Which were associated with the test of their bactericidal activity and adsorption capacity tests showed that both functionatized cotton fibers have good adsorption capacity to Cu 2+ and antibacterial action to staphylococcus aureus and bacilluscoli . They can be regenerated for repeated use after acidification with dilute hydrochloric acid and washing and sterilization with water and 95%alcohol successively.展开更多
运用气相色谱-离子阱质谱（ion trap mass spectrometry，ITMS）建立了大气中8种多溴二苯醚的二级质谱（MS／MS）检测方法。优化后的MS／MS方法对7种三溴至七溴二苯醚（BDE28、-47、-99、-100、-153、-154、-183）和十溴二苯醚（BDE209...运用气相色谱-离子阱质谱（ion trap mass spectrometry，ITMS）建立了大气中8种多溴二苯醚的二级质谱（MS／MS）检测方法。优化后的MS／MS方法对7种三溴至七溴二苯醚（BDE28、-47、-99、-100、-153、-154、-183）和十溴二苯醚（BDE209）的仪器检出限分别为0．04～0．23pg和9．38pg；方法检出限为6．0～27．1pg／m^3和211．6pg／m^3；6点标准曲线相关系数（r）为0．9980～0．9999。方法对8种目标物的加标回收率为79．1％～101．0％，相对标准偏差（RSD）为4．3％～14．3％（n=6）。对6份南京实际大气样品的检测结果表明：离子阱质谱的选择反应监测（selected reaction monitoring，SRM）技术能有效的降低背景干扰。优化后的MS／MS方法对目标化合物有较高的灵敏度，可应用于大气中痕量多溴二苯醚的定量检测。展开更多
文摘Two kinds of bactericidal and adsorptive cotton fibers(BACF 1,BACF 2) were made through epoxidation, amination and quaternarization. Which were associated with the test of their bactericidal activity and adsorption capacity tests showed that both functionatized cotton fibers have good adsorption capacity to Cu 2+ and antibacterial action to staphylococcus aureus and bacilluscoli . They can be regenerated for repeated use after acidification with dilute hydrochloric acid and washing and sterilization with water and 95%alcohol successively.
