Elimination of boron memory effect in inductively coupled plasma-mass spectrometry by addition of ammonia

Al-Ammar, Assad S.; Gupta, Rajesh K.; Barnes, Ramon M.

doi:10.1016/s0584-8547(99)00045-2

Cited by 49 publications

(48 citation statements)

References 8 publications

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“…However, B can be difficult to measure by ICP-MS, due to (1) spectral overlap of the 12 C peak on the 11 B peak, (2) nebulisation of acidic solutions resulting in high B blank values from the entrance system, and (3) high B concentrations in the sample that may cause memory effects (Al-Ammar et al, 1999Sah and Brown, 1997;. In addition to these technical complexities, preparation of carbonate samples for ICP-MS is time-consuming and meticulous.…”

Section: Introductionmentioning

confidence: 99%

Exploring B/Ca as a pH proxy in bivalves: relationships between <I>Mytilus californianus</I> B/Ca and environmental data from the northeast Pacific

et al. 2011

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Abstract.A distinct gap in our ability to understand changes in coastal biology that may be associated with recent ocean acidification is the paucity of directly measured ocean environmental parameters at coastal sites in recent decades. Thus, many researchers have turned to sclerochronological reconstructions of water chemistry to document the historical seawater environment. In this study, we explore the relationships between B/Ca and pH to test the feasibility of B/Ca measured on the ion probe as a pH proxy in the California mussel, Mytilus californianus. Heterogeneity in a range of ion microprobe standards is assessed, leading to reproducible B/Ca ratios at the 5 % level. The B/Ca data exhibit large excursions during winter months, which are particularly pronounced during the severe winters of 2004-2005 and 2005-2006. Furthermore, B/Ca ratios are offset in different parts of the skeleton that calcified at the same time. We compare the M. californianus B/Ca record to directly measured environmental data during mussel growth from the period of 1999-2009 to examine whether seawater chemistry or temperature plays a role in controlling shell B/Ca. A suite of growth rate models based on measured temperature are compared to the B/Ca data to optimise the potential fit of B/Ca to pH. Despite sampling conditions that were well-suited to testing a pH control on B/Ca, including a close proximity to an environmental record, a distinct change in pH at the sampling locale, and a growth model designed to optimise the correlations between seawater pH and shell B/Ca, we do not see a strong correlations between pH and shell B/Ca (maximum coefficient of determination, r 2 , of 0.207). Instead, our data indicate a strong biological control on B/Ca as observed in some other carbonate-forming organisms.

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Section: Introductionmentioning

confidence: 99%

Exploring B/Ca as a pH proxy in bivalves: relationships between <I>Mytilus californianus</I> B/Ca and environmental data from the northeast Pacific

et al. 2011

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“…B is known to be one of the difficult elements to be determined due to a significant memory effect. Al-Ammar et al 11 reported that a primary source of the memory effect was the volatilization of boric acid droplets in the spray chamber. In order to eliminate the memory effect, Vanderpool et al 12 adjusted sample pH to about 10 by addition of ammonium hydroxide solution.…”

Section: Armentioning

confidence: 99%

“…A small amount of ammonia gas was also introduced with the nebulizer gas flow. 11 Sun et al 13 added mannitol to the sample solutions to prevent B from binding to the spray chamber walls. In this work, sample solutions prepared from the matrix separation were already at pH higher than 10, and hence the memory effect from the volatile boric acid was not serious.…”

Section: Armentioning

confidence: 99%

Determination of Boron Steel by Isotope-Dilution Inductively Coupled Plasma Mass Spectrometry after Matrix Separation

2002

Bulletin of the Korean Chemical Society

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The concentration of B in steels is important due to its influence on mechanical properties of steel such as hardenability, hot workability, and creep resistance. An analytical method has been developed to determine B in steel samples by high-resolution inductively coupled plasma mass spectrometry (HR-ICP-MS). National Institute of Standard and Technology Standard Reference Material (NIST SRM) 348a was analyzed to validate the analytical method. The steel sample was digested in a centrifuge bottle with addition of aqua regia and 10 B spike isotope. Sample pH was then adjusted to higher than 10 to precipitate most matrix elements such as Fe, Cr, and Ni. After centrifugation, the supernatant solution was passed through a cation exchange column to enhance the matrix separation efficiency. B recovery efficiency was about 37%, while matrix removal efficiency was higher than 99.9% for major matrix elements. The isotope dilution method was used for quantification and the determined B concentration was in good agreement with the certified value.

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“…Some chemicals, such as mannitol, fluoride and ammonia, have been used for eliminating the memory interferences. [1][2][3][4] A flow-injection system with extraction treatment has also been coupled with ICP-MS to remove the effects of sample matrices for the determination of sub-μg g -1 levels of boron in iron and steel. 5 On the other hand, the high-performance liquid chromatography (HPLC) methods with a spectrophotometric or a fluorometric detector have been proposed for determining boron in steels.…”

Section: Introductionmentioning

confidence: 99%

Determination of Trace Amounts of Boron in Steels by On-line Reaction/Concentration/Separation Using an Anion-exchange Column

Shao

Yoshimura

2011

ANAL. SCI.

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Elimination of boron memory effect in inductively coupled plasma-mass spectrometry by addition of ammonia

Cited by 49 publications

References 8 publications

Exploring B/Ca as a pH proxy in bivalves: relationships between <I>Mytilus californianus</I> B/Ca and environmental data from the northeast Pacific

Exploring B/Ca as a pH proxy in bivalves: relationships between <I>Mytilus californianus</I> B/Ca and environmental data from the northeast Pacific

Determination of Boron Steel by Isotope-Dilution Inductively Coupled Plasma Mass Spectrometry after Matrix Separation

Determination of Trace Amounts of Boron in Steels by On-line Reaction/Concentration/Separation Using an Anion-exchange Column

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Elimination of boron memory effect in inductively coupled plasma-mass spectrometry by addition of ammonia

Cited by 49 publications

References 8 publications

Exploring B/Ca as a pH proxy in bivalves: relationships between &lt;I&gt;Mytilus californianus&lt;/I&gt; B/Ca and environmental data from the northeast Pacific

Exploring B/Ca as a pH proxy in bivalves: relationships between &lt;I&gt;Mytilus californianus&lt;/I&gt; B/Ca and environmental data from the northeast Pacific

Determination of Boron Steel by Isotope-Dilution Inductively Coupled Plasma Mass Spectrometry after Matrix Separation

Determination of Trace Amounts of Boron in Steels by On-line Reaction/Concentration/Separation Using an Anion-exchange Column

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Exploring B/Ca as a pH proxy in bivalves: relationships between <I>Mytilus californianus</I> B/Ca and environmental data from the northeast Pacific

Exploring B/Ca as a pH proxy in bivalves: relationships between <I>Mytilus californianus</I> B/Ca and environmental data from the northeast Pacific