Send a Message

Contact Us

Company Address

Zhengzhou, China.

Species dependent iodine extractions in polymer based

2016-11-1  A simple, rapid and sensitive spectrophotometric method has been developed for the extraction and speciation of iodine species; periodate (IO 4 −), iodide (I −) and povidone-iodine.The proposed method is based on aqueous biphasic system (ABS), obtained by mixing 50% aqueous solution of polyethylene glycol (PEG) of molecular weight 6000 with aqueous solution of inorganic salts (1.5 M Na 2

Iofina plc. (LSE AIM: IOF) Completion of IO#4 Iodine

2020-7-27  Iofina's business strategy is to identify, develop, build, own and operate iodine extraction plants currently focused in North America based on Iofina's WET® and IOsorb™ technology. Today’s news follows on from the successful commissioning of the Group’s IO#1, IO#2, and IO#3 iodine extraction plants.

Iofina Technology Leaders in Iodine

2021-7-15  Iofina plc is a vertically integrated Company that specializes in the exploration and production of iodine and the manufacturing of specialty chemical derivatives. With operations in Kentucky and Oklahoma, Iofina’s strategy is to identify, develop, build, own and operate iodine extraction plants based on the Company’s WET® IOsorb® technology.

Stabilities of iodide and iodate for iodine speciation

2018-6-12  A sample pre-treatment process based on alkaline extraction in the presence of EDTA was optimized for the extraction of these iodine species. Good results were achieved using 10% ammonium hydroxide (v/v) and 0.5 mM EDTA where the transformation between IO 3 − and I − was clearly minimized. The method was applied to several soil reference

How to recover iodine more efficiently? Extraction of

Iodine could decrease from 1 g/L to 0.09 g/L after only one-stage extraction. Compared with the extraction of simple iodide, the novel process exhibited a much higher efficiency (91% vs 63%). The molar ratio of I/Cl increased by 600 times compared with the initial aqueous, indicating that the selectivity was high. 2)

Determination of Iodine and Bromine Compounds by Ion

Iodine is an essential element for animals and human beings. It ionic iodine (I − and IO 3) and bromine (Br extraction method was used to extract these compounds, which were quantitatively leached with a 10% mass/volume (m/v)

Iodine dynamics in soils ScienceDirect

2012-1-15  2.4. Iodine extraction and analysis. After incubation for 114, 306, 810 and 3975 h, samples (∼4.5 g) of moist soil were equilibrated with 20 mL of 0.01 M KNO 3, followed by extraction with 0.15 M KH 2 PO 4 and then 10% TMAH, in 40 mL polycarbonate centrifuge tubes. At each stage soil suspensions were shaken for 16 h on a reciprocal shaker, centrifuged (25 min at 3500 rpm), and filtered

Oxidation of iodide and iodine on birnessite (delta-MnO2

Iodine (I(2)) was detected as an oxidation product that was subsequently further oxidized to iodate (IO(3)(-)). The third order rate constants, second order on iodide and first order on manganese oxide, determined by extraction of iodine in benzene decreased with increasing pH (6.3-7.5) from 1790 to 3.1M(-2) s(-1).

Analysis of Iodine Species in Seaweed using IC-ICP-MS

2020-12-7  published extraction procedure4 was used to extract iodine containing species. The extraction solution contained 40 mg pancreatin per 7 mL of 0.2 M KH 2 PO 4 /0.2 M NaOH buffer, pH 8. An aliquot of 0.2 g of sample was accurately weighed into 13 mL round base polypropylene tubes and mixed with 7 mL of extraction solution, then placed into an

Separation and Recovery of Iodine from Aqueous

2013-12-24  was undertaken to recover iodine and its derivatives that had been released into the environment and to improve iodine production by PCD using an SRM [9,10]. In this study, we tried to apply the PCD method for separation of iodine from water and obtained the recovery condi- tions and parameters for

Species dependent iodine extractions in polymer based

A simple, rapid and sensitive spectrophotometric method has been developed for the extraction and speciation of iodine species; periodate (IO 4 −), iodide (I −) and povidone-iodine.The proposed method is based on aqueous biphasic system (ABS), obtained by mixing 50% aqueous solution of polyethylene glycol (PEG) of molecular weight 6000 with aqueous solution of inorganic salts (1.5 M Na 2

Chloroform Extraction of Iodine in Seawater Method

2019-5-31  Abstract: The extraction of iodine from seawater is used as a means of analyzing the concentration and isotopic ratios of iodine at different locations in the ocean. This has practical applications in the testing of discharge from nuclear fuel reprocessing plants, tracing of ocean currents, and testing areas for potential environmental and

Stabilities of iodide and iodate for iodine speciation

2018-6-12  A sample pre-treatment process based on alkaline extraction in the presence of EDTA was optimized for the extraction of these iodine species. Good results were achieved using 10% ammonium hydroxide (v/v) and 0.5 mM EDTA where the transformation between IO 3 − and I − was clearly minimized. The method was applied to several soil reference

Determination of Iodine and Bromine Compounds by Ion

Iodine is an essential element for animals and human beings. It ionic iodine (I − and IO 3) and bromine (Br extraction method was used to extract these compounds, which were quantitatively leached with a 10% mass/volume (m/v)

Iofina Technology Leaders in Iodine

2021-7-15  Iofina plc is a vertically integrated Company that specializes in the exploration and production of iodine and the manufacturing of specialty chemical derivatives. With operations in Kentucky and Oklahoma, Iofina’s strategy is to identify, develop, build, own and operate iodine extraction plants based on the Company’s WET® IOsorb® technology.

In situ reductive dissolution to remove Iodine-129 from

2020-5-1  Sequential extraction experiments showed that only a small fraction (i.e., 2–15%) of the IO 3 − and I − are adsorbed to the sediment so contributions from reduction/release of adsorbed iodine are small. Moreover, untreated sediment leach experiments showed that by 10 pore volumes (sufficient to desorb iodide

Iofina starts construction of its next iodine extraction

2019-9-18  Known as IO#8, the new plant is in a different part of Oklahoma from its four existing sites and will take between six to seven months to build. Quick facts: Iofina PLC Follow

Analysis of iodine species in aqueous solutions SpringerLink

2003-3-29  Iodine is a biologically important trace element. Its behaviour in the environment and in human metabolism is determined by the type of iodine species which takes part in chemical reactions. Knowledge of their concentrations is necessary to understand and describe the iodine reaction paths. A separation procedure is proposed for quick determination of common forms of iodine—iodide, iodate

(PDF) Iodine speciation in Iodine-enriched microalgae

2010-1-30  The total amount of iodine, 483 μ g, in microalgae raw stuf f used for the study (fraction I), was distrib uted between fraction II-a), 320.7 μ g, which represents 66.7 %, and fraction V -a

Separation and Recovery of Iodine from Aqueous

2013-12-24  was undertaken to recover iodine and its derivatives that had been released into the environment and to improve iodine production by PCD using an SRM [9,10]. In this study, we tried to apply the PCD method for separation of iodine from water and obtained the recovery condi- tions and parameters for

Iofina plc. (LSE AIM: IOF) Completion of IO#4 Iodine

2020-7-27  Iofina's business strategy is to identify, develop, build, own and operate iodine extraction plants currently focused in North America based on Iofina's WET® and IOsorb™ technology. Today’s news follows on from the successful commissioning of the Group’s IO#1, IO#2, and IO#3 iodine extraction plants.

Determination of Iodine and Bromine Compounds by Ion

Iodine is an essential element for animals and human beings. It ionic iodine (I − and IO 3) and bromine (Br extraction method was used to extract these compounds, which were quantitatively leached with a 10% mass/volume (m/v)

Chloroform Extraction of Iodine in Seawater Method

2019-5-31  Abstract: The extraction of iodine from seawater is used as a means of analyzing the concentration and isotopic ratios of iodine at different locations in the ocean. This has practical applications in the testing of discharge from nuclear fuel reprocessing plants, tracing of ocean currents, and testing areas for potential environmental and

Iofina Technology Leaders in Iodine

2021-7-15  Iofina plc is a vertically integrated Company that specializes in the exploration and production of iodine and the manufacturing of specialty chemical derivatives. With operations in Kentucky and Oklahoma, Iofina’s strategy is to identify, develop, build, own and operate iodine extraction plants based on the Company’s WET® IOsorb® technology.

Stabilities of iodide and iodate for iodine speciation

2018-6-12  A sample pre-treatment process based on alkaline extraction in the presence of EDTA was optimized for the extraction of these iodine species. Good results were achieved using 10% ammonium hydroxide (v/v) and 0.5 mM EDTA where the transformation between IO 3 − and I − was clearly minimized. The method was applied to several soil reference

EXTRACTION AND ESTIMATION OF IODINE FROM

2019-6-21  Afroz et al.: Extraction and estimation of iodine from brown seaweeds 19 uptake by thyroid gland i.e., isothiocyanates from cruciferous vegetables (Greer and Astwood, 1948; Zimmermann, 2009). According to Hou et al. (1997) iodine existed in seaweeds primarily I-as shown

1 Kenneth S. Johnson, Iodine, from Industrial Minerals

2016-3-27  Iodine compounds are found in seawater, seaweed, marine or ganisms, and brines. American Brine Resources recovers io dine from oil-field brines collected from a number of oil and gas wells in nearby parts of northwestern Oklahoma. Extraction/Beneficiati on Wastes

Hassan Shetaya, Waleed Hares Abdou (2011) Iodine

2017-12-17  129IO 3-spikes into ‘steady state’ soil microcosms. The extraction efficiency of tetra-methyl ammonium hydroxide (TMAH) for soil iodine, and the effects of experimental procedures and conditions 6.2.4 Iodine Extraction and Analysis.....96 6.2.5 129I Recovery

(PDF) Iodine speciation in Iodine-enriched microalgae

2010-1-30  The total amount of iodine, 483 μ g, in microalgae raw stuf f used for the study (fraction I), was distrib uted between fraction II-a), 320.7 μ g, which represents 66.7 %, and fraction V -a

Separation and Recovery of Iodine from Aqueous

2013-12-24  was undertaken to recover iodine and its derivatives that had been released into the environment and to improve iodine production by PCD using an SRM [9,10]. In this study, we tried to apply the PCD method for separation of iodine from water and obtained the recovery condi- tions and parameters for