Determination of uranium in pore water from coastal sediment by standard addition ICP-MS analysis

Armid, Alrum; Ohde, Shigeru; Shinjo, Ryuichi; Toki, Tomohiro

doi:10.1007/s10967-007-6997-2

Cited by 13 publications

(5 citation statements)

References 8 publications

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“…As a consequence, significant temporal and spatial changes in the U/ Ca ratio in the oceans would not be expected over the past few hundred thousand years. Thus, a U concentration of 3.2 ppb (Ku et al, 1977;Broecker and Peng, 1982;Chen et al, 1986;Armid et al, 2008a) and a Ca concentration of 412 ppm (Culkin, 1965;Broecker and Peng, 1982) in seawater were used for estimating the D U values from previous studies.…”

Section: U/ca Thermometrymentioning

confidence: 99%

Seawater temperature proxies based on DSr, DMg, and DU from culture experiments using the branching coral Porites cylindrica

Armid

Asami

Fahmiati

et al. 2011

Geochimica et Cosmochimica Acta

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Section: U/ca Thermometrymentioning

confidence: 99%

Seawater temperature proxies based on DSr, DMg, and DU from culture experiments using the branching coral Porites cylindrica

Armid

Asami

Fahmiati

et al. 2011

Geochimica et Cosmochimica Acta

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“…Uranium is one of the key sources of nuclear power generation. Uranyl (UO 2 2+ ) is the main form of uranium in the environment, which is regarded as an environmental pollutant with strong radioactivity and high toxicity. − Up to date, many detection methods for UO 2 2+ have been developed, such as fluorescence detection, , electrochemical analysis, , inductively coupled plasma mass spectrometry (ICP-MS), , and the colorimetric method. , Among them, the colorimetric method is widely used for the detection of UO 2 2+ due to its simplicity and low cost. For instance, the DNAzymes with efficient catalytic activity and structure recognition toward UO 2 2+ have been employed for the colorimetric analysis of UO 2 2+ based on the changes in surface plasmon resonance (SPR) coupling of gold nanoparticles as a result of the UO 2 2+ -triggered cleavage of DNAzyme substrates .…”

Section: Introductionmentioning

confidence: 99%

“…Uranyl (UO 2 2+ ) is the main form of uranium in the environment, which is regarded as an environmental pollutant with strong radioactivity and high toxicity. 24−26 Up to date, many detection methods for UO 2 2+ have been developed, such as fluorescence detection, 27,28 electrochemical analysis, 24,29 inductively coupled plasma mass spectrometry (ICP-MS), 30,31 and the colorimetric method. 32,33 Among them, the colorimetric method is widely used for the detection of UO 2 2+ due to its simplicity and low cost.…”

Section: ■ Introductionmentioning

confidence: 99%

DNAzyme-Derived Aptamer Reversely Regulates the Two Types of Enzymatic Activities of Covalent–Organic Frameworks for the Colorimetric Analysis of Uranium

et al. 2023

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Nanozymes are nanomaterials with enzyme-mimetic activity. It is known that DNA can interact with various nanozymes in different ways, enhancing or inhibiting the activity of nanozymes, which can be used to develop various biosensors. In this work, we synthesized a photosensitive covalent−organic framework (Tph-BT) as a nanozyme, and its oxidase and peroxidase activities could be reversely regulated by surface modification of single-stranded DNA (ssDNA) for the colorimetric detection of UO 2 2+ . Tph-BT exhibits excellent oxidase activity and weak peroxidase activity, and it is surprising to find that the UO 2 2+ -specific DNA aptamer can significantly inhibit the oxidase activity while greatly enhancing the peroxidase activity. The present UO 2 2+ interacts with the DNA aptamer to form secondary structures and detaches from the surface of Tph-BT, thereby restoring the enzymatic activity of Tph-BT. Based on the reversed regulation effects of the DNA aptamer on the two types of enzymatic activities of Tph-BT, a novel "off-on" and "on-off" sensing platform can be constructed for the colorimetric analysis of UO 2 2+ . This research demonstrates that ssDNA can effectively regulate the different types of enzymatic activities of single COFs and achieve the sensitive and selective colorimetric analysis of radionuclides by the naked eye.

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“…In recent years, ICP-OES has been used in determination of phosphorous in geological samples [ 9 ], high-purity nickel [ 10 ], and biodiesel B100 from feedstock [ 11 ]. There are several quantitative methods used in ICP-OES mainly included calibration curve method (CCM) [ 12 – 15 ] and conventional standard addition method (CSAM) [ 16 , 17 ]. The CCM is simple, but it is the susceptible to errors by fluctuations in operating conditions and the matrix effect.…”

Section: Introductionmentioning

confidence: 99%

Determination of Phosphorus in Soil by ICP-OES Using an Improved Standard Addition Method

Jian

Bai

Liu

et al. 2018

Journal of Analytical Methods in Chemistry

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In this study, an improved standard addition method (ISAM) was developed for the determination of phosphorus in soil by ICP-OES based on the conventional standard addition method (CSAM) and calibration curve method (CCM). Certified standard soils were analyzed by the proposed ISAM method. The values obtained by ISAM method agreed with the certified values. Additionally, the results obtained by ISAM method were compared with those determined by the other two methods (CSAM and CCM). All the values obtained by the ISAM agreed with those from the other two methods. The detection limit, quantification limit, and recovery rate of each method were calculated, and the recovery rates of soil samples and the blank were all within the range of 90%–110%. Finally, the proposed method was applied to determine phosphorous in soil samples from Guangnan County, Yunnan Province, China, and the meadow soil from Qinghai-Tibet Plateau, China. The relative errors between the results from ISAM and CCM were all within 10%, and t-test showed that the results between ISAM and CCM had no significant difference (P > 0.05). Therefore, the proposed method overcame the matrix effect in some extent and was an acceptable method for the rapid and accurate batch analysis of P content in soil sample, especially batch samples with obvious matrix effect.

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Determination of uranium in pore water from coastal sediment by standard addition ICP-MS analysis

Cited by 13 publications

References 8 publications

Seawater temperature proxies based on DSr, DMg, and DU from culture experiments using the branching coral Porites cylindrica

Seawater temperature proxies based on DSr, DMg, and DU from culture experiments using the branching coral Porites cylindrica

DNAzyme-Derived Aptamer Reversely Regulates the Two Types of Enzymatic Activities of Covalent–Organic Frameworks for the Colorimetric Analysis of Uranium

Determination of Phosphorus in Soil by ICP-OES Using an Improved Standard Addition Method

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