Table 1.

Characteristic of different samples

Number of sample	Concentration (%)	Flow rate (cc/h)	Voltage (KV)	Distance (cm)	Speed of collector (rpm)	Diameter (nm)
1	10	0.1	20	12	200	134.19
2	10	0.3	20	12	200	168.49
3	10	0.4	20	12	200	185.35
4	10	0.6	20	12	200	226.74
5	10	0.4	20	12	800	167.71
6	10	0.4	20	12	1500	159.96
7	10	0.4	20	12	2500	159.09
8	10	0.3	22	12	800	188.46
9	10	0.3	20	12	1500	158.09
10	10	0.3	20	12	2500	156.35
11	10	0.4	15	10	200	158.62
12	10	0.4	17.5	10	200	175.19
13	10	0.4	20	10	200	182.91
14	10	0.4	22.5	10	200	203.69
15	10	0.4	20	8	200	183.65
16	10	0.4	22	8	200	192.79
17	10	0.4	24	8	200	215.31
18	10	0.4	26	8	200	216.76
19	12	0.3	19	12	600	217.42
20	12	0.4	22	12	600	250.26
21	12	0.5	22	12	600	259.33
22	12	0.6	22	12	600	260.93
23	12	0.5	23	12	600	259.90
24	12	0.5	25	12	600	268.60
25	12	0.6	25	12	600	277.80
26	12	0.2	12	12	400	197.91
27	12	0.2	16	12	400	203.50
28	12	0.2	26	12	400	219.75
29	12	0.2	30	12	400	263.26