Direct Quantitative Analysis of Arsenic in Coal Fly Ash

Table 5

Arsenic concentration (mg kg⁻¹).

	As content
Samples code	Raw coal (mg L^−1)*	Fly ash (mg kg^−1)**
		FA EP 1	FA EP 2	FA EP 3
E	1.58	9.34	26.27	39.12
F***	1.37	10.55	12.13	27.03
G***	1.37	42.94	54.42	57.85
H****	4.2	9.22	23.51	28.29
I****	4.2	40.85	42.78	45.05
J	2.65	18.57	27.82	41.02
K	1.34	10.96	14.23	16.12

∗Five raw coal samples.
**Twenty-one fly ash samples.
***F and G were the same raw coal samples.
****H and I were the same raw coal samples.