Silica gel modified with lumogallion for aluminum determination by spectroscopic methods

A simple and rapid new dispersive liquid–liquid microextraction based on solidification of floating organic drop combined with inductively coupled plasma-optical emission spectrometry for preconcentration and determination of aluminium in water samples

“…So preconcentration and separation techniques are still necessary. The widely used techniques for the separation and preconcentration of aluminium include liquid-liquid extraction (LLE) [6,7], ion exchange [8,9], solid-phase extraction (SPE) [10][11][12], single drop microextraction (SDME) [13] and cloud point extraction (CPE) [14].…”

Removal of aluminum (III) from environmental samples by siliceous support grafted with poly[1‐(N,N‐bis‐carboxymethyl)amino‐3‐allylglycerol‐co‐dimethylacrylamide] brushes

“…The regression equation (after [3] Silica-bonded glycerol 4 500 FAAS >98 2 [10] Controlled pore glass-L-methionine -160 USN-ICP OES 98-100 0.025 [21] Silica gel modified with Lumogallion --DRS -30 [11] Salicylic acid grafted on Amberlite XAD-4 --GF-AAS >95 - [22] Anion exchange resin-Tiron 5.6 20 ESR-S 100 0.3 [23] Amberlite XAD-1180/pyrocatechol violet chelating 6.45 150 GF-AAS >95 0.021 [5] Amberlite XAD-7 and Chele  100 --FAAS 95 - [24] Amberlite XAD-4-salicylic acid 4.4 ---- [25] Chelex-100 -2 E T -AAS 86-106 0.5 [26] Chelex 100 --ET-AAS -2.22 [27] poly(AGE/IDA-co-DMAA)-grafted silica gel 25.3 10 FAAS 91.6 1.8 Our method FAAS, flame atomic absorption spectrometry; SPF, spectrofluorometry; GFAAF; graphite furnace atomic absorption spectrometry; USN-CP OES, inductively coupled plasma optical emission spectrometer associated to an ultrasonic nebulization system; DRS, diffusion reflectance spectroscopy; ECR-S, ECR spectrophotometry; ET-AAS, electrothermal atomic absorption spectroscopy. The limit of detection corresponding to three times the sample blank standard deviation was found to be 1.8 mg L À1 .…”

“…Some studies demonstrated that Al(III) may be accumulated in the brain via different routes (food, water and pharmaceutical formulations) and may interfere with the normal activities of the nervous system. According to the literature, there are many reports that single drop microextraction, [7] liquid-liquid extraction, [8,9] and solid-phase extraction [10,11] have been widely used for separation and preconcentration of aluminum. [5,6] Since aluminum affects the human body negatively, determination of low levels of this element has become very important in environmental samples.…”

Dispersive ionic liquid microextraction of aluminium from environmental water samples by effervescent generation of carbon dioxide

“…The determination of Al(III) in different environmental samples has become important due to its negative role in human health. The analytical techniques which are mostly used for the determination of Al(III) are spectrofluorometry [6], graphite furnace atomic absorption spectrometry (GFAAS) [7], spectrophotometry [8] and flame atomic absorption spectrometry (FAAS) [9]. The separation techniques which are mostly used for the preconcentration of the analyte are solid-phase extraction (SPE) [10,11], liquid-liquid extraction (LLE) [12] and cloud point extraction (CPE) [13].…”