Separation/Preconcentration and Speciation Analysis of Trace Amounts of Arsenate and Arsenite in Water Samples Using Modified Magnetite Nanoparticles and Molybdenum Blue Method

Table 2

Comparison of the characteristic data between typical published methods and the proposed method in this work.

Sorbent	Species	Enrichment factor	Sorbent capacity (mg g^−1)	RSD (%)	Detection limit (𝜇g mL^−1)	Detection method	Reference
APDC^a/C-18	As(III), As(V)	50	NR^b	NR^b	0.0012^c, 0.09^c	ICP-MS^d	[15]
TiO2	As(III)	20	NR	2.4	0.1^c	GFAAS	[36]
APDC/CNTs^e	As(III), As(V)	250	9.1	3.5	0.02^c	GFAAS	[37]
PVP^f-impregnated SPE membrane disk	As(III)	NR	NR	NR	0.01	Colorimetry	[38]
CTAC^g/CNTs	As(V)	NR	NR	5.3	2.0	AF^h	[39]
Hybrid nano ZrO2/B2O3	As(III), As(V)	20	98.04	5.0	9.25	HGAAS^j	[40]
CTAB@ACMNPs	As(V), As(III); converted to As(V)	175	9.4	2.8	0.028	Molybdenum blue	This work

aAmmonium pyrrolidine dithiocarbamate, ^bnot reported, ^cis in 𝜇g L⁻¹.
^dIductively coupled plasma-mass spectrometry, ^ecarbon nanotubes, ^fpoly(vinyl-pyrrolidone), ^gcetyltrimethylammonium chloride, ^hatomic fluorescence spectrophotometry, ^jhydride generation atomic absorption spectrometry.