Table 1.

Optimization of membrane ingredients

NO	Percentage(W/W) of various components in membrane									L.R (μg mL -1 )	RT (s)
	PVC	AT-(TPB) 2	NaTPB	NPOE	DOP	TBP	TOP	DBP	slope
1	33.0	1.0	-	66.0	-	-	-		39.5	16.76 - 5586	20
2	33.0	1.0	-	-	66.0	-	-		22.2	223.4 – 5586	35
3	33.0	1.0	-	-	-	66.0	-		19.3	223.4 – 5586	40
4	33.0	1.0	-	-	-	-	66.0		27.2	3.9 – 5586	18
5	33.0	1.0	-	-	-	-	-	66.0	20.5	28 – 5586	25
6	33.5	1.0	0.5	-	-	-	65		28.5	0.44– 5586	18
7	35	1.0	1.5	-	-	-	65		27.9	2.8 – 5586	18
8	36.0	0.5	2.0	-	-	-	62		20.1	5.6 – 5586	20
9	30.0	4.0	1.0	-	-	-	65.0		30.1	0.09 – 5586	10
10	30.0	3.0	0.0	-	-	-	67.0		28.8	0.11 – 5586	12
11	30.0	3.0	1.0	-	-	-	66.0		29.4	0.11 – 5586	10
12	30	0.0	1.0	-	-	-	69		12	1117 – 5586	50