. 2019 Oct 28;16(21):4142. doi: 10.3390/ijerph16214142

Table 2.

Concentrations and frequencies of 13 regulated compounds and the TVOC, including a comparison with the maximum values recommended by the MHLW of Japan.

			Living Room					Bedroom
	LOQ ^(b)	Guideline Values ^(c)	Mean (±SD)	Median	Max	Min	Frequency	Mean (±SD)	Median	Max	Min	Frequency
Compounds ^(a)	(μg/m³)	(μg/m³)	μg/m³	μg/m³	μg/m³	μg/m³	%	μg/m³	μg/m³	μg/m³	μg/m³	%
Toluene	1.0	200	12 (11)	8	64	2	98	10 (8.5)	8	46	2	100
Ethylbenzene	1.0	3800	7 (8.6)	5	60	<1.0 ⁽^d)	98	7 (7.3)	4	31	<1.0	98
Xylene	1.0	870	5 (5.9)	4	35	<1.0	98	6 (5.7)	4	22	<1.0	98
Styrene	1.0	220	6 (7.2)	3	34	<1.0	98	3 (4.8)	2	27	<1.0	69
p-Dichlorobenzene	1.0	240	<1.0	<1.0	5.0	<1.0	27	<1.0	<1.0	4.3	<1.0	29
Tetradecane	1.0	330	3 (1.9)	2	10	<1.0	84	3 (2.7)	3	15	<1.0	84
Formaldehyde	1.0	100	15 (6.5)	13	35	3	100	14 (6.4)	13	32	4	100
Acetaldehyde	1.0	48	24 (10)	20	47	6	100	20 (10)	16	46	5	100
Fenobucarb	0.001	33	<0.001 ⁽^e)	<0.001	<0.001	<0.001	0.0	<0.001	<0.001	<0.001	<0.001	0.0
Diazinon	0.001	0.29	<0.001	<0.001	<0.001	<0.001	0.0	<0.001	<0.001	<0.001	<0.001	0.0
Dibutyl phthalate	0.07	220	0.1 (0.1)	0.1	0.6	<0.07 ⁽^f)	96	0.1 (0.2)	0.1	1	<0.07	96
Chlorpyrifos	0.001	1.0	<0.001	<0.001	<0.001	<0.001	0.0	<0.001	<0.001	<0.001	<0.001	0.0
Bis(2-ethylhexyl) phthalate	0.15	120	0.1 (0.1)	0.1 (0.1)	0.4	<0.15 ⁽^g)	98	0.2 (0.2)	0.1	0.7	<0.15	98
TVOC ^(h)			389 (112)	390	602	139		390 (123)	396	654	146

(a) All the compounds were calculated by individual response factor; (b) LOQ: limit of quantitation; (c) The MHLW of Japan set non-binding guideline values for 13 chemicals (six VOCs, two aldehydes and five SVOCs); (d), (e), (f), (g) < LOQ; (h) TVOC: Total concentration of 55 VOCs, 14 carbonyl compounds, and 22 SVOCs