Ivestigate Radon radioactive contamination level i

鹤无声

　1.Measuring method
　　We made use of our Chinese standerd measuring methods to the radon level of atmosphere and water and wall and soil ， and the exhalation rate of the floor and the wall indoor in one litter area in Taiyuan.We used REM-Ⅲ Radon Exhalation Rate apparatus，DHZM-ⅠRadon Continuous Measuring Instrument，and FD-125 Radon Measuring Instrument ，It’s scale coefficien is 18.24 cpm /（Bq˙m-3）. We reseach　the radioactive contamination　root in the exhalation of soil and building material， radon outdoor ，the contributor for the water and the wall indoor and soil.

　　2. Measuring result

　　We made use of the common measuring methods to the radon level of atmosphere and water and wall ， and the exhalation rate of the floor and the wall indoor.Table 1， Table 2， Table 3， Table 4.

　　Table 1 Radon Measuring result indoor and outdoor

	Radon concentration（Bq/m3）		PAEC 10-8J/m3		Radon Exhalation Rate mBq/（m2·s）
Type	outdoor	indoor	outdoor	indoor	floor	wall
1	91.5±5.50	8.80±1.32	2.89±0.53	2.83±1.52	19.74±4.36	13.59±2.95
2	54.65±5.02	10.42±2.71	1.52±0.54	0.17±0.53	19.38±5.27	29.58±4.57
3	53.9±3.55	6.21±1.50	0.74±0.51	0.4±0.50	18.03±3.52	17.23±4.30
4	30.7±2.54	3.66±0.46	1.06±0.23	0.12±0.54	3.52±1.59	5.29±2.13
5	29.73±5.52	10.66±1.93	0.6±0.19	0.43±0.59	7.10±2.48	1.33±0.42
6	8.29±5.58	6.33±1.62	4.19±1.11	3.80±1.51	5.19±1.31	1.49±0.51
7	9.40±1.57	8.71±1.56	0.15±0.02	0.21±0.12	5.22±1.57	2.63±0.90
8	13.66±2.20	8.23±1.32	0.20±0.03	0.26±0.20	2.48±1.53	2.52±1.14
9	11.53±2.32	5.20±1.16	0.27±0.12	0.31±0.02	2.04±0.52	1.50±0.51
10	6.58±1.22	4.46±1.28	0.24±0.07	0.29±0.17	2.14±0.51	1.76±0.44
11	9.39±1.13	5.49±1.74	2.03±1.11	2.49±0.50	15.90±3.42	2.32±1.20
12	6.47±1.31	4.18±0.23	2.6±0.32	2.69±0.51	3.23±0.42	3.86±1.54
13	8.48±2.84	4.47±0.52	4.71±0.53	3.80±0.52	1.84±0.31	6.25±2.62
15	9.94±2.70	13.97±2.39	5.36±0.62	4.25±1.53	2.51±0.63	2.80±1.21
16	6.88±1.49	7.43±1.56	4.21±0.30	5.44±2.56	2.22±0.52	1.76±0.40
17	6.00±1.95	6.11±1.54	2.96±1.57	3.05±1.51	29.74±6.54	1.95±0.75
18	98.13±5.93	13.78±2.53	16.11±2.22	4.77±1.54	23.35±5.50	6.55±1.54
19	17.28±3.62	9.35±1.89	6.32±1.32	4.60±1.50	11.90±2.36	6.50±2.42
20	20.68±3.47	10.58±1.53	5.24±2.53	5.62±1.54	6.50±1.57	5.11±1.56
21	18.41±5.90	16.67±2.29	8.10±1.79	3.89±0.72	4.61±1.43	4.70±0.52
22	30.80±9.44	16.67±2.53	9.01±2.62	3.89±0.41	4.84±1.34	4.66±1.43
23	21.89±2.32	6.96±0.52	8.05±1.51	2.71±0.54	l.04±0.42	7.30±1.92
average	26.42	8.64

　　Table 2　Radon concentration in water

L　Type	Quantiy	℃	CRn（kBq/m3）		Type	Quantiy	℃	CRn（kBq/m3）
1#	8	18	6.03±1.73		7#	4	17	7.36±2.40
2#	4	17	4.39±1.48		8#	4	18	6.39±1.64
3#	8	16	5.59±1.29		9#	4	19	6.53±2.33
4#	4	17	5.72±2.10		10#	4	16	7.04±2.81
5#	4	16	5.76±2.63		rain	4	10	0.09±0.05
6#	4	16	6.66±2.51		11#	4	18	6.23±1.13
Caverage								6.33

　　Table 3

　　Water consumption for one in our institute

use	Water consumption 10-3m3/d	Proportion 　　％	Estimating consumption 　　10-2m3/d
Rinsing	16.41	9.13	8.86
bathing	34.44	19.16	18.60
clearing	64.57	35.93	34.87
wasing	37.21	20.70	20.90
others	27.10	15.80	14.64
Caverage			9.706
	179.06	100.00	97.06

　　Table 4 Radon concentration in coalgas

Type	Quantity	CRn rang（Bq/m3）	CRn（Bq/m3）
1#	5	38.30～49.25	43.17±0.84
2#	6	41.95～58.37	51.07±0.91
3#	5	40.13～47.42	43.17±0.84
4#	4	25.54～27.36	26.15±0.73
5#	3	21.89～45.60	32.23±0.95
6#	5	45.66～49.25	47.42±1.02
7#	4	18.25～56.54	31.01±0.71
8#	3	10.94～12.77	11.55±0.61
CRn			35.72

3 . Conclusions and　Radon radioative dose

　　We set up the datebase abute the measuring results， in order to study on the radioation harming for health ，and offer to the better defending technique. It indicates that the radioactive contamination mostly root in the exhalation of soil and building material，secondly radon outdoor ，the little contributor for the water and the wall indoor. Table 5.

　　Table 5　Three kinds of houses Radon contribution（%）

TypeQuantity	material building material building material	outdoor	water	coalgas
First3	90.35	8.51	0.20	0.96
Sencond3	63.46	27.48	5.21	3.85
Third17	67.13	24.76	4.23	3.10

　　Let us look Table 1 and others about the result and their average ： Cindoor＝26.42Bq/m3 ，Coutdoor=8.64Bq/m3；we reference Radon and her daughters balance gene 0.4 indoor and 0.6 outdoor，We reference UNSCEAR　Report，Radon ，1988 ，page 231 table 22，indoor0.06lmSv/（Bq/m3），outdoor 0.03l mSv/（Bq/m3）；in a general，an individual breathe atmosphere indoor in a year about 5475m3，and outdoor about 1825m3；so radon radioative dose to individual in a year：H=26.42Bq/m3×0.40×0.061mSv/（Bqm-3）+8.64Bq/m3×0.6×0.031mSv/（Bqm-3）

　　=0.806（mSv）

　　Also It’s 0.806 mSv Radon radioative dose to individual in a year .

　　Ivestigate Radon radioactive contamination level indoor　and dose estimate for pople

　　Zhang wen-tao

　　（Chinese Institute of Radiation Protect，Taiyuan030006China.）

　　Abstract： In order to realize mostly the background of atmosphere and radon level ，We investigated radioactive contamination indoor in our insistute　in Taiyuan. We made use of the common measuring methods to the radon level of atmosphere and water and wall ， and the exhalation rate of the floor and the wall indoor. It indicates that the radioactive contamination mostly root in the exhalation of soil and building material，secondly radon outdoor ，the little contributor for the water and the wall indoor. We set up the datebase abute the measuring results， in order to study on the radioation harming for health ，and offer to the better defending technique.

酷乐普

老鹤翻译一下额，眼花缭乱滴