The title compound was prepared by mixing the aqueous solution of carbohydrazide and manganese perchlorate. It was characterized by X ray diffraction. The crystal of the title compound, [Mn(CHZ) 3](ClO 4) 2, belongs t...The title compound was prepared by mixing the aqueous solution of carbohydrazide and manganese perchlorate. It was characterized by X ray diffraction. The crystal of the title compound, [Mn(CHZ) 3](ClO 4) 2, belongs to space group P2 1/n with the crystal parameters a=1.019 7(2) nm, b=0.859 3(1) nm, c=2.141 2(3) nm, β=100.86(1)°; V=1.842 6(5) nm3, Z=4. The results show that all carbohydrazides are coordinated as bidentate by the oxygen atom of the carbonyl group and one nitrogen atom of the end group, forming a distorted octahedron. The explosive properties of the title complex were tested, the application in the engineering detonator was investigated.展开更多
建立了奶粉中高氯酸盐的液相色谱-串联质谱(LC—MS/MS)测定方法。奶粉样品用水-乙腈(体积比1:2)超声波振荡提取2次,于4000r/min离心后,上清液经Oasis HLB固相萃取小柱净化;采用离子交换色谱分离,色谱柱为METROSEP A Supp5(1...建立了奶粉中高氯酸盐的液相色谱-串联质谱(LC—MS/MS)测定方法。奶粉样品用水-乙腈(体积比1:2)超声波振荡提取2次,于4000r/min离心后,上清液经Oasis HLB固相萃取小柱净化;采用离子交换色谱分离,色谱柱为METROSEP A Supp5(150mm×4.0mm)阴离子交换柱,流动相为0.2mol/L乙酸铵溶液-乙腈(体积比1:1),流速0.7mL/min;电喷雾负离子模式电离,质谱多反应选择离子检测(MRM),检测离子对为m/z99→83和m/z 101→85,其中m/z99→83为定量离子对。方法的相对标准偏差为3.59%,回收率为91%~106%,检出限为1.0μg/kg,定量下限为5.0μg/kg。结果表明,该法简便快速、准确可靠,也适用于鲜牛奶、酸牛奶等其他乳制品中高氯酸盐的测定。展开更多
1988年5月4日中午前不久,美国内华达州 Henderson 镇被 Pacific Enginee-ring and Production Co.of Nevada(简称 PEPCON)所拥有的一个 AP 工厂的一连串爆炸所惊动,其影响是立即的和引入注目的,且仍在扩大着。一方面灾难引起了危急的国...1988年5月4日中午前不久,美国内华达州 Henderson 镇被 Pacific Enginee-ring and Production Co.of Nevada(简称 PEPCON)所拥有的一个 AP 工厂的一连串爆炸所惊动,其影响是立即的和引入注目的,且仍在扩大着。一方面灾难引起了危急的国家问题,在约数分钟的烟火中,8百多万磅的 AP 存货和美国生产这种固体火箭用氧化剂的装置能力的一半左右毁于一旦。该事故在政府和工业界中引起了对 AP 分配和供应的关注,并关心对国家空间和导弹计划的影响。恢复PEPCON 生产和扩大美国另一生产者——Kerr-McGee Chemical Corp.展开更多
文摘The title compound was prepared by mixing the aqueous solution of carbohydrazide and manganese perchlorate. It was characterized by X ray diffraction. The crystal of the title compound, [Mn(CHZ) 3](ClO 4) 2, belongs to space group P2 1/n with the crystal parameters a=1.019 7(2) nm, b=0.859 3(1) nm, c=2.141 2(3) nm, β=100.86(1)°; V=1.842 6(5) nm3, Z=4. The results show that all carbohydrazides are coordinated as bidentate by the oxygen atom of the carbonyl group and one nitrogen atom of the end group, forming a distorted octahedron. The explosive properties of the title complex were tested, the application in the engineering detonator was investigated.
文摘建立了奶粉中高氯酸盐的液相色谱-串联质谱(LC—MS/MS)测定方法。奶粉样品用水-乙腈(体积比1:2)超声波振荡提取2次,于4000r/min离心后,上清液经Oasis HLB固相萃取小柱净化;采用离子交换色谱分离,色谱柱为METROSEP A Supp5(150mm×4.0mm)阴离子交换柱,流动相为0.2mol/L乙酸铵溶液-乙腈(体积比1:1),流速0.7mL/min;电喷雾负离子模式电离,质谱多反应选择离子检测(MRM),检测离子对为m/z99→83和m/z 101→85,其中m/z99→83为定量离子对。方法的相对标准偏差为3.59%,回收率为91%~106%,检出限为1.0μg/kg,定量下限为5.0μg/kg。结果表明,该法简便快速、准确可靠,也适用于鲜牛奶、酸牛奶等其他乳制品中高氯酸盐的测定。
文摘1988年5月4日中午前不久,美国内华达州 Henderson 镇被 Pacific Enginee-ring and Production Co.of Nevada(简称 PEPCON)所拥有的一个 AP 工厂的一连串爆炸所惊动,其影响是立即的和引入注目的,且仍在扩大着。一方面灾难引起了危急的国家问题,在约数分钟的烟火中,8百多万磅的 AP 存货和美国生产这种固体火箭用氧化剂的装置能力的一半左右毁于一旦。该事故在政府和工业界中引起了对 AP 分配和供应的关注,并关心对国家空间和导弹计划的影响。恢复PEPCON 生产和扩大美国另一生产者——Kerr-McGee Chemical Corp.