irms_standards: C and N contents and ^{13}C and ^{15}N...

In henningte/elco: Handling Data on Chemical Element Contents and Isotope signatures

C and N contents and ^{13}C and ^{15}N δ\text{\textperthousand} of IRMS standards

Description

A data.frame with names, C and N contents and ^{13}C and ^{15}N δ\text{\textperthousand} of IRMS standards.

Usage

irms_standards

Format

A data frame with 4 rows and 5 columns:

standard_name

A character vector with the names of the standards as used in the vendor device of the IRMS.

C

A numeric vector with the relative mass fraction of C of the standards [g/g].

N

A numeric vector with the relative mass fraction of N of the standards [g/g].

S

A numeric vector with the relative mass fraction of S of the standards [g/g].

H

A numeric vector with the relative mass fraction of H of the standards [g/g].

O

A numeric vector with the relative mass fraction of O of the standards [g/g].

13C

A numeric vector with the δ\text{\textperthousand}^{13}C value of the standards.

15N

A numeric vector with the δ\text{\textperthousand}^{15}N value of the standards.

threshold_13C

A numeric vector with a threshold for the δ\text{\textperthousand}^{13}C value of the standards. The thresholds indicate the (by expert knowledge) estimated 95-% confidence interval half-width for standards measured at our working group's laboratory. If after isotope signature correction with elco_irms_correct_isotopes(), values for a standard exceed this limit, a warning is printed. Note that not for all standards such values are defined.

threshold_15N

A numeric vector with a threshold for the δ\text{\textperthousand}^{15}N value of the standards. The thresholds indicate the (by expert knowledge) estimated 95-% confidence interval half-width for standards measured at our working group's laboratory. If after isotope signature correction with elco_irms_correct_isotopes(), values for a standard exceed this limit, a warning is printed. Note that not for all standards such values are defined.

source

A character vector with the bibtex keys to the references where the data was derived from. If NA, values are own, uncertified, measurements.

Source

IAEA 600

\insertRef

Coplen.2006elco

BBOT_CN., WFS

\insertRef

IVAAnalysentechnikGmbHuCoKGt.2016elco

henningte/elco documentation built on May 21, 2022, 6:56 p.m.