Radioactivity of coal and ashes from Figueira coal power plant in Brazil

被引:51
作者
Flues, M.
Camargo, I. M. C.
Silva, P. S. C.
Mazzilli, B. P.
机构
[1] IPEN, Ctr Metrol Radiacoes, BR-05508000 Sao Paulo, Brazil
[2] IPEN, Ctr Quim & Meio Ambiente, BR-05508000 Sao Paulo, Brazil
关键词
D O I
10.1007/s10967-006-0467-0
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The Figueira coal-fired power plant (CFPP) is among the Brazilian CFPP which presents higher uranium concentration. Gamma-ray spectrometry was used to determine (238)U, (226)Ra, (210)Pb, (232)Th and (40)K contents in pulverized coal, furnace bottom ash and fly ash samples. The natural radionuclide concentrations in pulverized coal ranged from 813 to 2609 Bq(-)kg(-1)for U series and from 22 to 40 Bq(-)kg(-1) for (232)Th. The fly ash fraction gave concentrations ranging from 1442 to 14641 Bq(-)kg(-1), for uranium series. The same enrichment factor was observed for (238)U, (226)Ra and (232)Th. Only (210)Pb and stable Pb presented a high enrichment factor for the last stage filter fly ash. The concentration of the uranium series found in the ashes is close to the limit adopted by the Brazilian guideline (CNEN-NN-4.01).(22) Therefore, it is advisable to evaluate the environmental impact of the installation.
引用
收藏
页码:597 / 602
页数:6
相关论文
共 22 条
[1]  
Beck H.L., 1980, NATURAL RAD ENV 3, V2, P1521
[2]  
BECK HL, 1989, RADIAT PHYS CHEM, V34, P285
[3]  
*CNEN NN, 401 CNENN INN
[4]   BEHAVIOR OF NATURAL RADIONUCLIDES IN WESTERN COAL-FIRED POWER-PLANTS [J].
COLES, DG ;
RAGAINI, RC ;
ONDOV, JM .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1978, 12 (04) :442-446
[5]   DIRECT ANALYSIS OF PB-210 IN SEDIMENT SAMPLES - SELF-ABSORPTION CORRECTIONS [J].
CUTSHALL, NH ;
LARSEN, IL ;
OLSEN, CR .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1983, 206 (1-2) :309-312
[6]   COAL ENERGY VS NUCLEAR-ENERGY - A COMPARISON OF THE RADIOLOGICAL RISKS [J].
DESANTIS, V ;
LONGO, I .
HEALTH PHYSICS, 1984, 46 (01) :73-84
[7]  
EISENBUD M, 1997, ENV RADIOACTIVITY NA, P175
[8]  
FERNANDES ID, 1999, INT ASH UT S LEX KEN
[9]  
FERRET LS, 1999, INT ASH UT S LEX KEN
[10]   The influence of a coal-fired power plant operation on radionuclide concentrations in soil [J].
Flues, M ;
Moraes, V ;
Mazzilli, BP .
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 2002, 63 (03) :285-294