Detection Of Amphetamines In Urine And Inkjet Printer Environmentally Harmful Substances

Amphetamines have been abused widely in recent twenty years. Sucking them and delicting can strictly imperil normal our live and society stabilization.So we research on how to detect five kides of Amphetamines in urine.Firstly, we introduce five Amphetamines' characater and metabolizability. What's more .their extraction and analysis are summarized.Secondly, hexamethylane extracting-GC have been provided to detect Amphetamines in urine. 500uL hexamethylane extracts 1 μg/mL AM and MA of urine, their recoveries are 71.14% and 107.13%. RSD=1.97% and 2.13% respectively. The recovery is 98.15% and RSD =1.20% ,when detecting 4.0 μg/mL MDMA. However, Extracting 16.0μg/mL Ephedrine and MDA ,the efficiency is lower , that is 25.14% and 49.06%.In the end , TFA derivating-GC,GC-MS detecting five amphetamines in urine is developed, it is better not only because of improving chromatogram but also having enhanced sensitivity. After 75uL TFA derivated , the recoveries of 1 .0 μg/mL AM,MA and MDMA are 90.21%, 102.67% and 99.25 %respectively.The recoveries of 4.0μg/mL Ephedrine and MDA are 50.57 % and 74.06 % .Today, Printer have walked into many home, manifold contamination of printing ink is harming our health quietly. So it is necessary to set up standard in order to confine the contamination abusing. In this part, we establish some reseach on As. Hg, Pb and phenol in printing ink.At first, a method of dual channel -hydride generation- atomic fluorescence to determine arsenic ( As )and mercury (Hg) in printing ink is introduced. After Nitric and perchloric acid dejesting,As and Hg 's linear range are 0.5 ~ 15 μg/L, R2=0.9995(As) and 0.5~5.0μg/L,R2= 0.9997(Hg) respectively. The limit of detection is 0.0453 μg/L(As) and 0.0108 μg/L(Hg). The precision is 1.80%(As) and 1.58%(Hg ). The recoveriese of As and Hg are 99.31 %~106.91 % and 72.40%~128.15%.In the next place,determination of plumbum in printing ink by hydride generation -atomic fluorescence spectrometry is firstly brought forward. After microwave dejesting,K3Fe ( CN ) 6 oxidate Pb , the recovery can be enhanced to 86.12 % ~95.67 % .The linear range is between 0.5 U g/L and 15 u g/L(R2= 0.9980). The limit of detection is 0.6280 u g/L. The precision is 1.35%.Thirdly, phenol is detected by Reversed-phase liquid Chromatography after Chloroform extracting .The column is C8. The mobile phase is that methanol to water is 50 to 50. The chromatographic peak can be found within six minutes. The linear range is between 0.4 u g/mL and 20.0 u g/mL (R2=0.9995). Inter-day variation is 0.97% and intia-day variation is 1.72%.