Study on Carbonyl Emissions of Diesel Engine Fueled with Biodiesel

Table 4

The linear equation, correlation coefficient, and linear range of the 13 kinds of hydrazones.

Number	Carbonyl compounds	Linear equation	Correlation coefficient	Linear range/g·L^−1	g·L^−1	RSD%
()	Formaldehyde-DNPH		0.998	2.135000	2231	0.21
()	Acetaldehyde-DNPH		0.998	1.525500	1154	0.09
()	Propylene aldehyde-DNPH		0.999	1.321100	1198	0.45
()	Acetone-DNPH		0.998	1.220500	1069	1.02
()	Propionaldehyde-DNPH		0.999	1.220500	1109	0.38
()	Crotonaldehyde-DNPH		0.998	1.117900	1203	0.86
()	Butyraldehyde-DNPH		0.998	1.117500	1195	0.97
()	Butanone-DNPH		0.999	0.813500	1086	0.58
()	Benzene formaldehyde-DNPH		0.999	0.812500	1097	0.36
()	Isovaleraldehyde-DNPH		0.998	0.915500	1065	0.42
()	n-Valeraldehyde-DNPH		0.998	0.915500	1124	0.68
()	Hexaldehyde-DNPH		0.996	0.813900	1171	0.56
()	Two-methyl phenyl formaldehyde-DNPH		0.999	0.811700	1132	1.03