Fan Gao, Jing Xue, Rong Hu, Xian-Hua Li, Qiu-Li Li
: Distinguishing biomineralized minerals from inorganic minerals has been a longstanding challenge. The organic matter within biomineralized minerals constitutes compelling evidence that sets them apart from inorganic minerals. However, for small samples that have undergone degradation and diagenetic alteration, routine analytical technologies have difficulties in identifying internal residual organic signals. Atom Probe Tomography, as the highest-spatial-resolution microanalytical technique, facilitates the study of elements spatial distribution and nano-scale structures, holding significant potential for applications in biogeochemistry. In this study, Atom Probe Tomography has been applied to fossil samples for the first time, comparing inorganic Durango apatite with fossil conodont. This research discovered residual organic components within conodont, manifesting in the form of nano-scale particles coupled with high carbon and nitrogen concentrations. This signal is promising for differentiating between biominerals and inorganic minerals, which is greatly potential for identifying nano-scale biosignatures in ancient samples.
{"title":"Atom Probe Tomography Reveals Nano-Scale Organic Remaining In Conodont","authors":"Fan Gao, Jing Xue, Rong Hu, Xian-Hua Li, Qiu-Li Li","doi":"10.46770/as.2024.026","DOIUrl":"https://doi.org/10.46770/as.2024.026","url":null,"abstract":": Distinguishing biomineralized minerals from inorganic minerals has been a longstanding challenge. The organic matter within biomineralized minerals constitutes compelling evidence that sets them apart from inorganic minerals. However, for small samples that have undergone degradation and diagenetic alteration, routine analytical technologies have difficulties in identifying internal residual organic signals. Atom Probe Tomography, as the highest-spatial-resolution microanalytical technique, facilitates the study of elements spatial distribution and nano-scale structures, holding significant potential for applications in biogeochemistry. In this study, Atom Probe Tomography has been applied to fossil samples for the first time, comparing inorganic Durango apatite with fossil conodont. This research discovered residual organic components within conodont, manifesting in the form of nano-scale particles coupled with high carbon and nitrogen concentrations. This signal is promising for differentiating between biominerals and inorganic minerals, which is greatly potential for identifying nano-scale biosignatures in ancient samples.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140415411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: Layered double hydroxides (LDHs) are a class of materials that may be readily synthesized in a laboratory environment. This work successfully conducted the synthesis of a new nanomaterial (ZnMnAl LDH). The characterization of this material was accomplished utilizing many analytical techniques, including FTIR, XRD, SEM-mapping, and FE-SEM. ZnMnAl LDH was employed to separate and enrich Cu(II) and Ni(II) from soil and water samples. The Cu and Ni ions were eluted from ZnMnAl LDH nanoparticles by using 2 mL of 0.1 mol L −1 of HNO 3 . The metal ions were quantified using flame atomic absorption spectrometry (FAAS). An investigation was conducted to examine the impact of many analytical factors on the efficiency of metal ions' extraction. These parameters include pH, sorbent amount, eluent volume, eluent concentration, sample volume
:层状双氢氧化物（LDHs）是一类可在实验室环境中轻松合成的材料。这项研究成功合成了一种新型纳米材料（ZnMnAl LDH）。利用傅立叶变换红外光谱（FTIR）、X射线衍射（XRD）、扫描电镜制图（SEM-mapping）和FE-SEM等多种分析技术完成了该材料的表征。ZnMnAl LDH 被用来从土壤和水样中分离和富集铜（II）和镍（II）。用 2 mL 0.1 mol L -1 的 HNO 3 从 ZnMnAl LDH 纳米颗粒中洗脱出 Cu 和 Ni 离子。使用火焰原子吸收光谱（FAAS）对金属离子进行定量。研究考察了许多分析因素对金属离子萃取效率的影响。这些参数包括 pH 值、吸附剂用量、洗脱液用量、洗脱液浓度、样品体积、吸附剂用量和洗脱液浓度。
{"title":"A New Micro-Solid Phase Extraction Using ZnMnAl LDH Nano-Sorbent For Cu And Ni Determination In Natural Water And Soil","authors":"Mustafa Soylak","doi":"10.46770/as.2023.310","DOIUrl":"https://doi.org/10.46770/as.2023.310","url":null,"abstract":": Layered double hydroxides (LDHs) are a class of materials that may be readily synthesized in a laboratory environment. This work successfully conducted the synthesis of a new nanomaterial (ZnMnAl LDH). The characterization of this material was accomplished utilizing many analytical techniques, including FTIR, XRD, SEM-mapping, and FE-SEM. ZnMnAl LDH was employed to separate and enrich Cu(II) and Ni(II) from soil and water samples. The Cu and Ni ions were eluted from ZnMnAl LDH nanoparticles by using 2 mL of 0.1 mol L −1 of HNO 3 . The metal ions were quantified using flame atomic absorption spectrometry (FAAS). An investigation was conducted to examine the impact of many analytical factors on the efficiency of metal ions' extraction. These parameters include pH, sorbent amount, eluent volume, eluent concentration, sample volume","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140415876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: The composition of particles resulting from pulsed laser ablation is not well understood, although it is anticipated that molecules from the ablated material undergo varying degrees of breakdown, depending on factors such as laser wavelength, energy, pulse width, matrix properties, and gas atmosphere. As reliable arsenic characterization and speciation techniques are available, a fundamental study was undertaken to shed light on the behavior of arsenic compounds (arsenic pentoxide, dimethylarsenic acid, and arsenobetaine within a cellulose matrix, along with pure elemental arsenic), using a pulsed 213 nm Nd:YAG laser and ablation in different gas atmospheres (He, Ar/CO 2 [99/1 %], Ar/O 2 [80/20 %], and O 2 ) at atmospheric pressure. The generated arsenic, collected in aerosol form on inline syringe filters (0.2 μm), was subjected to sequential dissolution, yielding water-soluble, HCl-soluble, and insoluble fractions. The water-soluble fraction was analyzed for arsenic species using chromatographic techniques in combination with element-specific detection. The analysis revealed that extremely complex processes take place during laser ablation, not only (partially) stripping organoarsenic species from their methyl groups and lowering the valence state, but also creating conditions for the synthesis of methylated arsenic species from arsenic pentoxide and generating more or less soluble nano/micro/macro particles for all arsenic compounds. These findings contribute to a more nuanced understanding of the multifaceted photochemical transformations that may occur during laser ablation of molecules.
{"title":"A Glimpse Into The Nature Of Particles Created During Pulsed Laser Ablation Of Arsenic Compounds In Ambient Gases","authors":"Johannes T. van Elteren, Walter Goessler","doi":"10.46770/as.2023.305","DOIUrl":"https://doi.org/10.46770/as.2023.305","url":null,"abstract":": The composition of particles resulting from pulsed laser ablation is not well understood, although it is anticipated that molecules from the ablated material undergo varying degrees of breakdown, depending on factors such as laser wavelength, energy, pulse width, matrix properties, and gas atmosphere. As reliable arsenic characterization and speciation techniques are available, a fundamental study was undertaken to shed light on the behavior of arsenic compounds (arsenic pentoxide, dimethylarsenic acid, and arsenobetaine within a cellulose matrix, along with pure elemental arsenic), using a pulsed 213 nm Nd:YAG laser and ablation in different gas atmospheres (He, Ar/CO 2 [99/1 %], Ar/O 2 [80/20 %], and O 2 ) at atmospheric pressure. The generated arsenic, collected in aerosol form on inline syringe filters (0.2 μm), was subjected to sequential dissolution, yielding water-soluble, HCl-soluble, and insoluble fractions. The water-soluble fraction was analyzed for arsenic species using chromatographic techniques in combination with element-specific detection. The analysis revealed that extremely complex processes take place during laser ablation, not only (partially) stripping organoarsenic species from their methyl groups and lowering the valence state, but also creating conditions for the synthesis of methylated arsenic species from arsenic pentoxide and generating more or less soluble nano/micro/macro particles for all arsenic compounds. These findings contribute to a more nuanced understanding of the multifaceted photochemical transformations that may occur during laser ablation of molecules.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140411072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: This study demonstrates an analytical method for the high spatial resolution (20 µm) and high-precision determination of antimony (Sb) isotope composition in stibnite, using femtosecond laser ablation multi-collector inductively coupled plasma mass spectrometry (fs-LA-MC-ICP-MS). The potential matrix effect-inducing elements in Sb isotope composition measurements exhibit extremely low concentrations in two newly introduced natural stibnite reference materials, DC and BJS, rendering their impact virtually negligible during fs-LA-MC-ICP-MS analysis. Through reciprocal correction of DC and BJS, consistent results were achieved, aligning with those obtained by SN-MC-ICP-MS, indicating an absence of discernible matrix effects between the two samples. A comprehensive assessment was conducted to evaluate the contribution of the Sn standard solution to enhance the external precision of measurements. The 2SD of δ 123 Sb mean values increased by 0.02‰ to 0.04‰. Adjusting the laser ablation spot size (5μm-80μm) to control signal intensity, we investigated the deviation in δ 123 Sb caused by mismatched signal intensities between the sample and the reference material. The matching range of signal intensity between the reference sample and the test sample was within -40% to 140%, ensuring satisfactory precision. Additionally, once the signal intensity of 121 Sb exceeded 15V, the internal precision of the 123 Sb/ 121 Sb ratio no longer exhibited a significant decline. Measurements of DC and BJS were conducted using fs-LA-MC-ICP-MS, coupled with SN-MC-ICP-MS, backscattered electron maps (BSE) and elemental compositions, confirming the accuracy of this method and the homogeneity of the two potential reference materials.
{"title":"Determination Of Sb Isotope Ratios In Stibnite Using Fs-LA-MC-ICP-MS And Two Potential Reference Materials Study","authors":"Chao Li","doi":"10.46770/as.2024.013","DOIUrl":"https://doi.org/10.46770/as.2024.013","url":null,"abstract":": This study demonstrates an analytical method for the high spatial resolution (20 µm) and high-precision determination of antimony (Sb) isotope composition in stibnite, using femtosecond laser ablation multi-collector inductively coupled plasma mass spectrometry (fs-LA-MC-ICP-MS). The potential matrix effect-inducing elements in Sb isotope composition measurements exhibit extremely low concentrations in two newly introduced natural stibnite reference materials, DC and BJS, rendering their impact virtually negligible during fs-LA-MC-ICP-MS analysis. Through reciprocal correction of DC and BJS, consistent results were achieved, aligning with those obtained by SN-MC-ICP-MS, indicating an absence of discernible matrix effects between the two samples. A comprehensive assessment was conducted to evaluate the contribution of the Sn standard solution to enhance the external precision of measurements. The 2SD of δ 123 Sb mean values increased by 0.02‰ to 0.04‰. Adjusting the laser ablation spot size (5μm-80μm) to control signal intensity, we investigated the deviation in δ 123 Sb caused by mismatched signal intensities between the sample and the reference material. The matching range of signal intensity between the reference sample and the test sample was within -40% to 140%, ensuring satisfactory precision. Additionally, once the signal intensity of 121 Sb exceeded 15V, the internal precision of the 123 Sb/ 121 Sb ratio no longer exhibited a significant decline. Measurements of DC and BJS were conducted using fs-LA-MC-ICP-MS, coupled with SN-MC-ICP-MS, backscattered electron maps (BSE) and elemental compositions, confirming the accuracy of this method and the homogeneity of the two potential reference materials.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140412869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Purification of High Aluminum Content Samples for Rapid and Precise Analysis of Lithium Isotopes","authors":"Zhi-Yong Zhu","doi":"10.46770/as.2023.170","DOIUrl":"https://doi.org/10.46770/as.2023.170","url":null,"abstract":"","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139281217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Rapid Determination of Multiple Impurities in Ultra-pure LaNi5 Alloy by Glow Discharge Mass Spectrometry","authors":"Xingjian Wei, Zhen Qin","doi":"10.46770/as.2023.189","DOIUrl":"https://doi.org/10.46770/as.2023.189","url":null,"abstract":"","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139280554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Liquid Microjunction Introduction System for Inductively Coupled Plasma Mass Spectrometry","authors":"Diane Beauchemin","doi":"10.46770/as.2023.101","DOIUrl":"https://doi.org/10.46770/as.2023.101","url":null,"abstract":",","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139280755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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