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A new flow injection chemiluminesenet method was presented for the determination of phenol based on the inhibition effect of trace phenol on the chemiluminescence reaction between luminol and N-chlorosuccinimide system.The linear range for the determination of phenol is 1.5×10~(-5)~3.5×10~(-4)mg/mL,the detection limit is 2.36×10~(-6)mg/mL.This method has been used for the determination of phenol in water samples with satisfactory results.The mechanism of the inhibitory reaction was also discussed. 相似文献
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The high spin states of 129Ce have been populated via heavy-ion fusion evaporation reaction 96Mo (37Cl, 1p3n) 129Ce. The γ-γ coincidence and intensity balance used to measure the B(M1; I→I-1)/B(E2; I→I-2) (the probability ratio of the dipole and quadrupole transition) in ν7/2[523] rotational band of 129Ce. And the energy splitting (Δe′) has been got through the experimental Routhians. The lifetimes and quadrupole moments Qt have been extracted from the lineshape analyses using DSAM. The deformation of the ν7/2[523] rotational band of 129Ce was extracted from the Qt and moment of inertia JRR. 相似文献
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PVP/PVA半互穿网络材料的制备及其性能研究 总被引:1,自引:0,他引:1
以N-乙烯基吡咯烷酮(NVP)为单体、N,N-亚甲基双丙烯酰胺(BIS)为交联剂、过硫酸铵(APS)为引发剂,在聚乙烯醇(PVA)水溶液中原位聚合制备了半互穿网络结构(semi-IPN)的复合聚合物,并用红外光谱、表面接触角、吸水率以及拉力测试对材料的结构和性能进行了表征。结果表明:所制备的材料具有温敏特性,当交联剂用量达到一定值时,semi-IPN膜的伸长率和弹性模量都存在一个最大值;增加PVA的用量,semi-IPN膜的表面接触角减小,伸长率和弹性模量则增加明显。 相似文献
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北京自由电子激光器(BFEL)是一台工作于中红外区Compton型FEL振荡器。本文结合BFEL装置,设计了一套完整的激光外注入光路,利用声光调QCO_2激光器产生的10.6μm激光做激励源注入到BFEL光腔中,以缩短振荡建立时间,提高BFEL输出能量,改善输出激光的相干性。模拟计算结果是:当BFEL光腔中的外注入光强为自发辐射强度的10~5倍时,可使饱和振荡建立时间缩短35%,输出能量提高2倍。 相似文献
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The high spin states of 112In have been populated via the 110Pd(7Li,5n)112In reaction with a beam energy of 50 MeV. By analyzing the γ-γ coincidence relations and DCO ratios of γ transitions,A new level scheme of 112In including seventy-four new gamma transitions and six new bands up to the excitation energy of 6.8 MeV has been presented. 相似文献
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High-spin states in 139Nd nucleus have been reinvestigated with the reaction 128Te (16O, 5n) at a beam energy of 90 MeV. The level scheme has been expanded with spin up to 47/2 h. At the low spin states, the yrast collective structure built on the νh11 / 2-1 multiplet shows a transitional shape with γ≈32° according to calculations of the triaxial rotor-plus-particle model. Three collective oblate bands with γ~-60° at the high spin states were identified for the first time. A band crossing is observed around hω~0.4 MeV in one oblate band based on the 25/2- level. 相似文献