Use of ion chromatography for the determination of transition metals in the control of sewage-treatment-plant and related waters

Cardellicchio, Nicola; Ragone, Pietro; Cavalli, Silvano; Riviello, John

doi:10.1016/s0021-9673(97)00086-1

Cited by 36 publications

(20 citation statements)

References 25 publications

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“…The system flow was 0.3 mL min −1 through an IonPac CG5A (2 × 50 mm) guard column, CS5A capillary column (2 × 250 mm) and UV-VIS spectrophotometry with detection at 530 nm (Cardellicchio et al, 1997). For soluble Fe(II), Fe(III), Cu, and Zn, the detection limits (USEPA, 1997) were 1.7, 0.4, 1.3, and 4.1 µg L −1 , respectively, and the expanded uncertainties at the 95 % level of confidence (BIPM, 2008) were 3, 42, 46, and 56 %, respectively.…”

Section: Ion Chromatography Analysismentioning

confidence: 99%

Soluble iron nutrients in Saharan dust over the central Amazon rainforest

et al. 2017

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The intercontinental transport of aerosols from the Sahara desert plays a significant role in nutrient cycles in the Amazon rainforest, since it carries many types of minerals to these otherwise low-fertility lands. Iron is one of the micronutrients essential for plant growth, and its long-range transport might be an important source for the iron-limited Amazon rainforest. This study assesses the bioavailability of iron Fe(II) and Fe(III) in the particulate matter over the Amazon forest, which was transported from the Sahara desert (for the sake of our discussion, this term also includes the Sahel region). The sampling campaign was carried out above and below the forest canopy at the ATTO site (Amazon Tall Tower Observatory), a near-pristine area in the central Amazon Basin, from March to April 2015. Measurements reached peak concentrations for soluble Fe(III) (48 ng m−3), Fe(II) (16 ng m−3), Na (470 ng m−3), Ca (194 ng m−3), K (65 ng m−3), and Mg (89 ng m−3) during a time period of dust transport from the Sahara, as confirmed by ground-based and satellite remote sensing data and air mass backward trajectories. Dust sampled above the Amazon canopy included primary biological aerosols and other coarse particles up to 12 µm in diameter. Atmospheric transport of weathered Saharan dust, followed by surface deposition, resulted in substantial iron bioavailability across the rainforest canopy. The seasonal deposition of dust, rich in soluble iron, and other minerals is likely to assist both bacteria and fungi within the topsoil and on canopy surfaces, and especially benefit highly bioabsorbent species. In this scenario, Saharan dust can provide essential macronutrients and micronutrients to plant roots, and also directly to plant leaves. The influence of this input on the ecology of the forest canopy and topsoil is discussed, and we argue that this influence would likely be different from that of nutrients from the weathered Amazon bedrock, which otherwise provides the main source of soluble mineral nutrients

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Section: Ion Chromatography Analysismentioning

confidence: 99%

Soluble iron nutrients in Saharan dust over the central Amazon rainforest

et al. 2017

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“…Thus, the separation of metals with PDCA is based on pure anion exchange. The separation was superior to the oxalic separation and it was possible to separate and determine Fe 3+ , Cu 2+ , Ni 2+ , Zn 2+ , Co 2+ , Cd 2+ , Mn 2+ and Fe 2+ in one injection [4]. Unfortunately, Pb 2+ could not be detected by the post-column reagent PAR because not only was it strongly complexed by PDCA but it also exhibited slow complexation/decomposition kinetics [12].…”

Section: Chromatographic Separationmentioning

confidence: 99%

“…However, the Pb 2+ -PDCA complex was so strong that Pb 2+ could not be detected simultaneously with other heavy and transition metals [4], but this could be improved by using 5-Br-PADAP instead of PAR as the post-column chromogenic reagent. 5-Br-PADAP could form stable complexes with metals.…”

Section: Effects Of 5-br-padap Concentration On Peak Heights Of Metalsmentioning

confidence: 99%

“…The widely used cationic IC methods involve a cation-exchange (or a mixed cation-and anion-exchange) separation followed by post-column complexation with 4-(2-pyridylazo)resorcinol (PAR), to form chelates which can be sensitively monitored by spectrophotometric detection [3]. The anion-exchange approach did offer some advantages with respect to selectivity and for the analysis of complex samples [4]. At present, the bifunctional ion-exchange column is the most effective analytical column for separating heavy and transition metals [1].…”

Section: Introductionmentioning

confidence: 99%

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Ion chromatography of heavy and transition metals by on- and post-column derivatizations

Ding

Mou

Liu

et al. 2000

Analytica Chimica Acta

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A new method for the simultaneous separation and determination of mercury(II) with other heavy and transition metals by ion chromatography (IC) was developed. This method involves on-column derivatization with 2,6-pyridinedicarboxylic acid (PDCA) and anion-exchange separation, followed by a post-column reaction with 2-[(5-bromo-2-pyridyl)-azo]-5-diethylaminophenol (5-Br-PADAP) to form metal-5-Br-PADAP chelates, which can be sensitively monitored by spectrophotometric detection at 565 nm. PDCA was first combined with Na 2 C 2 O 4 to separate the metals within 16 min. The optimum separation and derivatization conditions were studied in detail. The detection limits of Pb 2+ , Cu 2+ , Ni 2+ , Zn 2+ , Co 2+ , Cd 2+ , Mn 2+ and Hg 2+ were 0.2 mg l −1 (115 l loop), 1.5, 5, 0.5, 5, 5, 3 and 20 g l −1 (676 l loop), respectively. This method was applied to the analysis of standard rice sample, waste cellpacking and municipal solid waste fly ash with satisfying results.

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“…Nowadays, stationary phases having both cation and anion exchange capacities are found to be more useful in separating heavy and transition metal ions [29] because the separation is controlled by the concentrations of free metal ions and the various insitu metal complexes formed, which are in an equilibrium with each other [30]. One such mixed ion exchanger namely Ion Pac CS5A has been widely used for the separation of lanthanides and transition metal cations in several matrices [31][32][33].…”

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confidence: 99%

Separation Behavior of U(VI) and Th(IV) on a Mixed Ion Exchange Column Using 2,6-Pyridine Dicarboxylic Acid as a Complexing Agent and Determination of Trace Level Thorium in Uranium Matrix Employing High Performance Ion Chromatography

Raut¹,

Roy²,

Das³

et al. 2013

IJAMSC

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Retention behavior of U(VI) and Th(IV) as their 2,6-pyridine dicarboxylic acid (PDCA) complexes on reversed phase and ion exchange (cation, anion and mixed ion exchange) columns was studied and based on the results, a simple ion chromatography method for the determination of trace level thorium in uranium oxide using 0.075 mM 2,6-pyridine dicarboxylic acid (PDCA) and 1 M KNO 3 in 1.2 M HNO 3 as eluent (flow rate 1 mL/min) was proposed. The advantage of the developed method is that the separation of uranium matrix is not required prior to the ion chromatographic determination of trace Th. Separation was carried out on a mixed ion exchange stationary phase and a 10 −4 M arsenazo (III) solution was used as post column reagent for detecting the separated metal ions. The separation of Th from uranium using PDCA in the present investigation is attributed through cation exchange mechanism. A calibration plot was constructed by following the standard addition method over the concentration range of 0.25 to 10 ppm of Th in the presence of uranium matrix, which resulted in a linear regression coefficient of 0.9978. The precision of the method was better than 5% and the LOD for Th was found to be 0.1 ppm (S/N = 3). The method has been validated by comparing the results with the results obtained from ICP-MS analysis where the Th is separated from the uranium matrix. The proposed method is simple, rapid, accurate and cost effective compared to techniques like ICP-MS or ICP-AES and is suitable for the routine kind of analysis.

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Use of ion chromatography for the determination of transition metals in the control of sewage-treatment-plant and related waters

Cited by 36 publications

References 25 publications

Soluble iron nutrients in Saharan dust over the central Amazon rainforest

Soluble iron nutrients in Saharan dust over the central Amazon rainforest

Ion chromatography of heavy and transition metals by on- and post-column derivatizations

Separation Behavior of U(VI) and Th(IV) on a Mixed Ion Exchange Column Using 2,6-Pyridine Dicarboxylic Acid as a Complexing Agent and Determination of Trace Level Thorium in Uranium Matrix Employing High Performance Ion Chromatography

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