Table 3.

Heavy metal detection in PM10 filter paper through ICP-MS during pre-to-post Diwali 2021

Parameters	Study time	S1, traffic	S2, residential	S3, control	Mean	STD	Max	Min
Al (µg/m3)	Day 1 (pre-Diwali)	8.36	18.80	12.90	13.35	5.23	18.80	8.36
	Day 2 (pre-Diwali)	13.91	2.09	6.53	7.51	5.97	13.91	2.09
	Day 3 (Diwali)	47.29	39.11	0.20	28.87	25.16	47.29	0.20
	Day 4 (post-Diwali)	2.62	18.55	12.90	11.36	8.08	18.55	2.62
	Day 5 (post-Diwali)	18.91	0.37	− 2.05	5.75	11.47	18.91	− 2.05
Mn (µg/m3)	Day 1 (pre-Diwali)	0.33	0.84	0.10	0.42	0.38	0.84	0.10
	Day 2 (pre-Diwali)	1.11	0.33	0.36	0.60	0.44	1.11	0.33
	Day 3 (Diwali)	0.55	0.71	0.10	0.45	0.31	0.71	0.10
	Day 4 (post-Diwali)	0.10	0.71	0.10	0.30	0.35	0.71	0.10
	Day 5 (post-Diwali)	0.33	0.19	0.09	0.20	0.12	0.33	0.09
Cu (µg/m3)	Day 1 (pre-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 2 (pre-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 3 (Diwali)	0.22	0.20	n/d	n/a	n/a	0.22	0.20
	Day 4 (post-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 5 (post-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
Zn (µg/m3)	Day 1 (pre-Diwali)	29.11	65.20	23.36	39.22	22.68	65.20	23.36
	Day 2 (pre-Diwali)	160.35	58.69	132.43	117.16	52.52	160.35	58.69
	Day 3 (Diwali)	88.28	59.55	20.54	56.12	34.00	88.28	20.54
	Day 4 (post-Diwali)	46.04	95.03	74.87	71.98	24.62	95.03	46.04
	Day 5 (post-Diwali)	101.47	23.89	17.75	47.70	46.67	101.47	17.75
Se (µg/m3)	Day 1 (pre-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 2 (pre-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 3 (Diwali)	n/d	0.20	n/d	n/a	n/a	0.20	0.20
	Day 4 (post-Diwali)	0.60	n/d	0.20	n/a	n/a	0.60	0.20
	Day 5 (post-Diwali)	0.44	n/d	n/d	n/a	n/a	0.44	0.44
Cd (µg/m3)	Day 1 (pre-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 2 (pre-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 3 (Diwali)	0.22	n/d	n/d	n/a	n/a	0.22	0.22
	Day 4 (post-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
	Day 5 (post-Diwali)	n/d	n/d	n/d	n/a	n/a	0.00	0.00
Pb (µg/m3)	Day 1 (pre-Diwali)	0.33	0.56	0.30	0.40	0.14	0.56	0.30
	Day 2 (pre-Diwali)	4.23	1.32	2.66	2.74	1.46	4.23	1.32
	Day 3 (Diwali)	3.52	2.82	0.10	2.15	1.81	3.52	0.10
	Day 4 (post-Diwali)	0.20	1.21	0.20	0.54	0.58	1.21	0.20
	Day 5 (post-Diwali)	1.32	0.09	0.19	0.53	0.68	1.32	0.09

Heavy metals like V, Cr, Co, Ni, As, and Hg are not detected in PM10 filter paper

n/d not detected, n/a not applicable