Certification of NIST Standard Reference Material 1575a pine needles and results of an international laboratory comparison

Mackey, Elizabeth A.; Becker, Donald A.; Oflaz, Rabia; Greenberg, Ronald I.; Lindstrom, Richard M.; Yu, Lee L.; Wood, Laura J.; Long, Stephen E.; Kelly, William R.; Mann, Jacqueline L.; MacDonald, Bruce S.; Wilson, Stephen; Brown, Zoe; Briggs, Paul H.; Budhan, James; Paul, Rick L.

doi:10.6028/nist.sp.260-156

Cited by 13 publications

(8 citation statements)

References 4 publications

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“…Calcium and sodium values for NIST-1547 by INAA have not been reported in recent publications [32,33]. Sodium results from the latest re-assessment of this SRM by NIST itself were in agreement [34], even if such an agreement may be viewed as somewhat arguable since the uncertainty is around 40% ðNa : 25:7 AE 10Þ. The results from ITN and TUDelft concur with the latter, due account made for their ranges of uncertainty.…”

Section: Resultssupporting

confidence: 76%

Multianalytical determination of trace elements in atmospheric biomonitors by k0-INAA, ICP-MS and AAS

Freitas

Pacheco

Dionísio

et al. 2006

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Resultssupporting

confidence: 76%

Multianalytical determination of trace elements in atmospheric biomonitors by k0-INAA, ICP-MS and AAS

Freitas

Pacheco

Dionísio

et al. 2006

Nuclear Instruments and Methods in Physics Research Section A:

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“…In particular, before the determination of chemical elements, samples (125 mg each) were subjected to microwave mineralization in a Milestone Microwave Laboratory System (mls 1200, Shelton, CT, USA) by a combination of 50% HF and 65% HNO 3 (1:2 = v:v), and deionized water. Standard Reference Material was used to evaluate the analytical accuracy [41]. Indications on the pH values of the biodeposits were obtained in situ with litmus papers (range 0–14).…”

Section: Methodsmentioning

confidence: 99%

Geomicrobiology of a seawater-influenced active sulfuric acid cave

D’Angeli

Ghezzi

Leuko³

et al. 2019

PLoS ONE

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Fetida Cave is an active sulfuric acid cave influenced by seawater, showing abundant microbial communities that organize themselves under three main different morphologies: water filaments, vermiculations and moonmilk deposits. These biofilms/deposits have different cave distribution, pH, macro- and microelement and mineralogical composition, carbon and nitrogen content. In particular, water filaments and vermiculations had circumneutral and slightly acidic pH, respectively, both had abundant organic carbon and high microbial diversity. They were rich in macro- and microelements, deriving from mineral dissolution, and, in the case of water filaments, from seawater composition. Vermiculations had different color, partly associated with their mineralogy, and unusual minerals probably due to trapping capacities. Moonmilk was composed of gypsum, poor in organic matter, had an extremely low pH (0–1) and low microbial diversity. Based on 16S rRNA gene analysis, the microbial composition of the biofilms/deposits included autotrophic taxa associated with sulfur and nitrogen cycles and biomineralization processes. In particular, water filaments communities were characterized by bacterial taxa involved in sulfur oxidation and reduction in aquatic, aphotic, microaerophilic/anoxic environments (Campylobacterales, Thiotrichales, Arenicellales, Desulfobacterales, Desulforomonadales) and in chemolithotrophy in marine habitats (Oceanospirillales, Chromatiales). Their biodiversity was linked to the morphology of the water filaments and their collection site. Microbial communities within vermiculations were partly related to their color and showed high abundance of unclassified Betaproteobacteria and sulfur-oxidizing Hydrogenophilales (including Sulfuriferula ), and Acidiferrobacterales (including Sulfurifustis ), sulfur-reducing Desulfurellales, and ammonia-oxidizing Planctomycetes and Nitrospirae. The microbial community associated with gypsum moonmilk showed the strong dominance (>60%) of the archaeal genus Thermoplasma and lower abundance of chemolithotrophic Acidithiobacillus , metal-oxidizing Metallibacterium , Sulfobacillus , and Acidibacillus . This study describes the geomicrobiology of water filaments, vermiculations and gypsum moonmilk from Fetida Cave, providing insights into the microbial taxa that characterize each morphology and contribute to biogeochemical cycles and speleogenesis of this peculiar seawater-influenced sulfuric acid cave.

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“…There is a tradition of innovation in measurement science to characterize these high-impact samples 1 . New technologies are used, rigorous experimental designs are employed, and exotic methods applied 2 , 3 . In a virtuous cycle, existing methods are optimized and new methods are developed using reference materials as the benchmarks.…”

Section: Background and Summarymentioning

confidence: 99%

Extensive sequencing of seven human genomes to characterize benchmark reference materials

et al. 2016

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The Genome in a Bottle Consortium, hosted by the National Institute of Standards and Technology (NIST) is creating reference materials and data for human genome sequencing, as well as methods for genome comparison and benchmarking. Here, we describe a large, diverse set of sequencing data for seven human genomes; five are current or candidate NIST Reference Materials. The pilot genome, NA12878, has been released as NIST RM 8398. We also describe data from two Personal Genome Project trios, one of Ashkenazim Jewish ancestry and one of Chinese ancestry. The data come from 12 technologies: BioNano Genomics, Complete Genomics paired-end and LFR, Ion Proton exome, Oxford Nanopore, Pacific Biosciences, SOLiD, 10X Genomics GemCode WGS, and Illumina exome and WGS paired-end, mate-pair, and synthetic long reads. Cell lines, DNA, and data from these individuals are publicly available. Therefore, we expect these data to be useful for revealing novel information about the human genome and improving sequencing technologies, SNP, indel, and structural variant calling, and de novo assembly.

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Certification of NIST Standard Reference Material 1575a pine needles and results of an international laboratory comparison

Cited by 13 publications

References 4 publications

Multianalytical determination of trace elements in atmospheric biomonitors by k0-INAA, ICP-MS and AAS

Multianalytical determination of trace elements in atmospheric biomonitors by k0-INAA, ICP-MS and AAS

Geomicrobiology of a seawater-influenced active sulfuric acid cave

Extensive sequencing of seven human genomes to characterize benchmark reference materials

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