The Origin and Presentation of Chemical Data

Lark, P.D.; Craven, B.R.

doi:10.1016/b978-0-08-011849-9.50005-8

Cited by 41 publications

(65 citation statements)

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“…Of the different procedures proposed to determine the interval of coverage of the intersection point of two straight lines, the method proposed by Lark et al 23,24 has been chosen, because it is relatively simple and allows a good estimate of the coverage interval, presenting, at the same time, solid statistical support. 25 To obtain the coverage interval, it is necessary to solve an equation that depends on the parameters of the two regression straight lines, i.e.…”

Section: Analytical Sciences October 2003 Vol 19mentioning

confidence: 99%

Data Analysis in the Determination of Stoichiometries and Stability Constants of Complexes

et al. 2003

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The determination of stoichiometries and stability constants of complexes by means of UV-visible spectrophotometry applying traditional methods does not evaluate the quality of the values obtained, since the classic application of these methods does not provide coverage intervals. However, the use of chemometric techniques in different steps of the application of these methods makes it possible to obtain not only a real value of the characteristics of the complexes but a validation of such a value. In this paper a methodology is proposed that combines some traditional methods, three different regression models (LMSR, LSR and LSPR) and a small number of mathematical algorithms. This methodology is able to estimate, in a simple and rigorous way, the stoichiometry and stability constant of a complex and its corresponding uncertainties.

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Section: Analytical Sciences October 2003 Vol 19mentioning

confidence: 99%

Data Analysis in the Determination of Stoichiometries and Stability Constants of Complexes

et al. 2003

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“…The limits of 95% confidence in E, and log A may be found by means of the formula given in (17). However, the values obtained using this statistical procedure seemed rather unrealistically low (i.e.…”

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Internal rotation in the methyl esters of dimethylcarbamic acid and thio derivatives

Lemire¹,

Thompson²

1970

Can. J. Chem.

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“…Where data for two different variables have been combined the variances have been propagated in the calculation of the standard error of the mean (Lark et al 1968).…”

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confidence: 99%

Carbon flow through oxygen and sulfate reduction pathways in salt marsh sediments1

Howes

Dacey

King

1984

Limnology & Oceanography

170

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We measured surface 0, uptake, 35S0.,2-reduction, and total sediment metabolism (CO, production) in sediments (O-30 cm) supporting stands of short Spartina alterniflora in a New England salt marsh. Sediment CO, production was highest at the surface where 0, was present and declined rapidly with depth. In deeper sediments (below 5 cm) CO, production was equal to 35S0,2-reduction as determined by the Cr2+ reduction technique. Time-course experiments using CO, production and 35S04?-reduction (by Cr2+ reduction and aqua regia digest) indicate that the aqua regia technique is not reliable for measuring SOd2-reduction and that the rate ofSOd2-reduction is much less than previously reported for this marsh.Our estimates of annual 0, uptake conform with those for CO, production and belowground production. We estimate carbon mineralization to average about 180 mmol C.m-2.d-1, among the highest measured for marine sediments. Our simultaneous measurements of 0, uptake, CO2 production, and SOd2-reduction suggest that at least half of this decomposition occurs via SOd2-reduction. We conclude that the mechanisms underlying carbon and sulfur cycling in salt marsh sediments are much more similar to subtidal sediments than previously recognized.

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The Origin and Presentation of Chemical Data

Cited by 41 publications

References 0 publications

Data Analysis in the Determination of Stoichiometries and Stability Constants of Complexes

Data Analysis in the Determination of Stoichiometries and Stability Constants of Complexes

Internal rotation in the methyl esters of dimethylcarbamic acid and thio derivatives

Carbon flow through oxygen and sulfate reduction pathways in salt marsh sediments1

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