Fast Analysis of Water Samples for Trace Amount of Crystal Violet Dye Based on Solid Phase Extraction Using Nanoporous SBA-3 prior to Determination by Fiber Optic-Linear Array Detection Spectrophotometry

Table 2

Determination of crystal violet in different samples.

Sample	CV added (µgL^−1)	CV found (µgL^−1)	RSD^a (%)	Recovery (%)
Fish (salmon)	—	1.6	1.1	—
Fish (salmon)	50	51.5	1.2	99.8
Fish (salmon)	70	71.9	1.5	100.4
Fish farming water^b	—	BDL^d	—	—
Fish farming water	50	49.7	1.2	99.4
Fish farming water	70	70.2	1.6	100.2
River water^c	—	BDL	—	—
River water	50	48.3	1.4	96.6
River water	70	70.1	1.7	100.1

aRelative standard deviation (𝑛=3).
bCollected from trout fish farming pools, Amol, Iran.
cCollected from river, Hamedan, Iran.
dBelow Detection Limit.