Chlorate ion standard solution established by multipath titration techniques

Asakai, Toshiaki

doi:10.1016/j.microc.2018.06.015

Cited by 13 publications

(11 citation statements)

References 26 publications

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“…In the same supernatant filtrate, concentrations of soil Na + , K + , Ca 2+ , and Mg 2+ were determined by ICP‐AES(Optima 2100DV, Perkin Elmer, USA) (Xin et al, 2010). Soil Cl − was measured by the silver nitrate titration method (Asakai, 2018).…”

Section: Methodsmentioning

confidence: 99%

Effects of planting Melia azedarach L. on soil properties and microbial community in saline‐alkali soil

Shao

Zhou

et al. 2021

Land Degrad Dev

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Saline‐alkali soils are widely distributed in China, affecting plant growth and sustainable development of ecosystems. Few studies have been done on the improvement of saline‐alkali soils by planting Melia azedarach in phytoremediation. This study characterized the effects of planting M. azedarach on chemical properties and microbial communities in saline‐alkali soils [bare (CK), bulk (BS), and rhizosphere soil (RS)]. Compared with the bare soil, planting M. azedarach lowered salt content and concentrations of extractable Na+, K+, Ca2+, Mg2+, and Cl−, but significantly increased organic matter, total nitrogen, total phosphorus, available phosphorus, soil urease activity, and alkaline phosphatase activity in the rhizosphere soil. High‐throughput sequencing results indicated that M. azedarach increased the Chao1 index and Shannon index of soil microbial communities. The three dominant bacterial phyla were Proteobacteria, Actinobacteria and Bacteroidetes, and the three dominant fungal phyla were Ascomycota, Basidiomycota, and Glomeromycota. Redundancy analysis indicated that total phosphorus concentration and alkaline phosphatase activity significantly influenced bacterial diversity, whereas soil Ca2+ and Mg2+ concentrations were closely related to the fungal community diversity. In conclusion, planting Melia azedarach improved soil properties, increased the diversity and richness of soil microbial communities, and thus ameliorated the saline‐alkali soil.

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Section: Methodsmentioning

confidence: 99%

Effects of planting Melia azedarach L. on soil properties and microbial community in saline‐alkali soil

Shao

Zhou

et al. 2021

Land Degrad Dev

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“…This rapid iodine liberation reaction with chlorite ions was similar to those with iodate [5], periodate, bromate and cerium(IV) ions. In contrast, the processes with dichromate [9], chlorate [3] and perchlorate ions [4] were substantially different. With dichromate ions, the iodine liberation reactions with similar amounts of potassium iodide and acids were slower, and were completed more than 10 min.…”

Section: Path a − Examinations Of Iodine Liberation Reaction By Const...mentioning

confidence: 85%

“…Detailed three CRMs and coulometric determinations were previously reported (NMIJ CRM 3006-a potassium iodate, NMIJ CRM 3002-a potassium dichromate and NMIJ CRM 3008-a sodium chloride). The multipath titrimetry was performed in a similar manner as the previous report [3,4]. The end-point detection methods used were constant-voltage biamperometry for path A, and potentiometry for paths B and C.…”

Section: Methodsmentioning

confidence: 99%

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Characterization of oxyanions of chlorine by multipath titrimetric approach for drinking water quality control

Asakai

2022

J. Phys.: Conf. Ser.

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The analysis of oxyanions, perchlorate, chlorate, chlorite and hypochlorite ions, is of interest, especially from the viewpoint of evaluating drinking water quality. Instrumental analyses are generally performed to quantify them, and require a standard solution of corresponding ions; however, no standard solutions characterized by a metrologically valid procedure have existed. In the present study, perchlorate, chlorate and chlorite ions were characterized by performing multipath titration techniques. This technique is an approach to determine the amount of substances in chemicals by employing different stoichiometric reactions. It has decreased the risk and the contribution of unknown biases that each measurement method has, and gives further reliable results than those based on a conventional single titration method. The comprehensive evaluation of the measurement uncertainties for these assays was carried out, resulting in the establishment of the measurement methodologies for oxyanion standards.

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“…In the same supernatant filtrate, concentrations of soil Na, K, Ca and Mg were determined by ICP-AES(Optima 2100DV, Pekin-Elmer, USA) (Xin et al , 2010). Soil Clwas measured by the silver nitrate titration method (Asakai, 2018).…”

Section: Measurement Of Soil Propertiesmentioning

confidence: 99%

Effects of planting Melia azedarach L. on soil properties and microbial community in saline-alkali soil

Shao

Zhou

et al. 2020

Preprint

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Saline-alkali soils are widely distributed in China, affecting plant growth and sustainable development of ecosystems. This study characterized the effects of planting Melia azedarach L. on chemical properties and microbial communities in saline-alkali soils [bare (CK), bulk (BS) and rhizosphere soil (RS)]. Compared with the bare soil, planting Melia azedarach L. lowered salt content and concentrations of extractable Na, K, Ca, Mg and Cl-, but significantly increased organic matter, total nitrogen, total phosphorus, available phosphorus, soil urease activity and alkaline phosphatase activity in the rhizosphere soil. High-throughput sequencing results indicated that bacterial richness and diversity decreased in the order RS>BS>CK. The richness of fungi was ranked RS>CK>BS, and their diversity decreased in the order CK>RS>BS. The three dominant bacterial phyla were Proteobacteria, Actinobacteria and Bacteroidetes, and the three dominant fungal phyla were Ascomycota, Basidiomycota and Glomeromycota. Redundancy analysis indicated that total phosphorus concentration and alkaline phosphatase activity significantly influenced bacterial diversity, whereas soil Ca and Mg concentrations were closely related to the fungal community diversity. In conclusion, planting Melia azedarach L. improved soil properties, increased the diversity and richness of soil microbial communities, and thus ameliorated the saline-alkali soil.

show abstract

Chlorate ion standard solution established by multipath titration techniques

Cited by 13 publications

References 26 publications

Effects of planting Melia azedarach L. on soil properties and microbial community in saline‐alkali soil

Effects of planting Melia azedarach L. on soil properties and microbial community in saline‐alkali soil

Characterization of oxyanions of chlorine by multipath titrimetric approach for drinking water quality control

Effects of planting Melia azedarach L. on soil properties and microbial community in saline-alkali soil

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