Trace Level Arsenic Quantification through Cloud Point Extraction: Application to Biological and Environmental Samples

Table 5

Determination of arsenic in different environmental samples.

Sample	As(V) found in samples	As(III) + As(V) found in samples		As(V) added (ng)	Total arsenic		Recovery (%)
	Proposed method	Proposed method	ICPAES method		Proposed method	ICPAES method	Proposed method	ICPAES method
Polluted water*	ND	500±12	499±13	—	—	—	—	—
Bore well water*	ND	200±13	200±11	20	220±12	220±12	100	100
Polluted soil^†	32±2.0	99.0±9.1	98.0±8.3	—	—	—	—	—
Spinach leaves^† (Spinacia oleracea)	ND	210±12	209±12	20	230±10	229±12	100	99.5
Tomato leaves† (Lycopersicon esculentum)	ND	500±15	449±11	10	590±12	600±15	98.3	100

𝑛=5; the values given here are average of five measurements.
ND: Not detected.
*Concentration in ng mL⁻¹.
^†Concentration in ng g⁻¹.