Preparation of Multiwalled Carbon Nanotubes/Hydroxyl-Terminated Silicone Oil Fiber and Its Application to Analysis of Crude Oils

Table 4

Precisions (RSD), limits of detection (LODs), and linear ranges of the proposed method.

Compounds	RSD^a (%) (𝑛=5)	LODs^b (ng/L)	Linear range (ng/L)	Regression equation	𝑟
nC17-alkane	3.6	0.2	10–800	𝑦=0.0018+0.0132𝑥	0.9998
Pristine	5.1	0.5	10–800	𝑦=0.0105+0.0267𝑥	0.9993
Naphthalene	7.8	1.6	10–500	𝑦=0.0237+0.0087𝑥	0.9965
5-𝛼-Androstane	4.6	0.8	10–500	𝑦=0.0138+0.0032𝑥	0.9971

aThe concentration of the standard solution was 50 ng/L for each compound.
^bLODs were estimated on the basis of a signal-to-noise ratio of 3.