泥炭,软褐煤中的腐殖质的荧光光谱研究

对滇西镇安盆地泥炭，软褐煤中的腐殖质进行了荧光光谱研究，发现它们的荧光性质很复杂，有些腐殖质可以象稳定组分一样发出橙黄至黄色荧光，Ｉ５４６＝８．１３～１３．１７单峰或不完全双峰λｍａｘ＝５６０～６０５ｎｍ，Ｑ６５０／５００＝０．６０～２．９３；大部分腐殖质不发荧光或发暗棕褐色荧光Ｉ５４６＝０～５．３８，因荧光太弱而难以获得荧光光谱，但被激发数分钟后，有些不发荧光或发暗棕褐色荧光的腐殖质其荧光会渐泊

CATALYTIC FLUORIMETRIC DETERMINATION OF TRACE AMOUNT OF BROMINE ION

The huminite of the peat and soft brown coal in the Zhenan basin, western Yunnan, has been studied by means of fluorescence microscopy. The study reveals that the fluorescent features of the huminite are considerabably complicated: some huminite, like liptinites, can give out dark yellow to yellow fluorescent light, I546 ranging from 8.13 to 13.17; and the fluorescent spectrum having one peak or two peaks, lambdamax ranging from 555 to 585nm and Q650/500 from 0.60 to 2.93. Most of huminites do not give out fluorescent light or give out dark brown fluorescent light, I546 ranging from 0 to 5.38. Because of having extraordinarily weak fluorescent light, it is very difficult to obtain their fluorescent spectrum. Nevertherless, after being stimulated for several minutes, some huminites that do not give out fluorescent light or give out dark brown fluorescent light may give out yellowish brown to dark orange fluorescent light, I546 ranging from 6.12 to 12.17, lambdamax. from 590 to 615nm and Q650/600 from 3.49 to 4.31. With the stimulating time becoming longer (10 to 20min), some huminites,may give out sharper yellow fluorescent light, I546 ranging from 12.18 to 20.01, lambdamax from 555 to 595nm and Q650/500 from 0.87 to 1.60.