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GC/MS Chromatogram Section - Cuticular Hydrocarbon Profile of a Cataglyphis iberica Ant Queen

Source: R/datasets.R
GCMS_data1.Rd

A small 0.4 min section of a GC/MS chromatogram (RT 26.80-27.20 min) obtained from the cuticular hydrocarbon extract of a *Cataglyphis iberica* queen. Six compounds with near-Gaussian peak shapes co-elute in this segment. Data were collected on a Shimadzu QP-2010 Ultra equipped with a 30 m x 0.25 mm x 0.25 um DB-5ms column after liquid injection of a hexane extract. For details see Van Oystaeyen et al. Science 2014.

Usage

GCMS_data1

Format

A numeric matrix with 119 rows (time slices) and 671 columns (m/z values).

Rows

Individual full-scan acquisitions (time scans). Row names give the scan mid-point in minutes (26.80 <= RT <= 27.20).

Columns

Unit-mass channels, m/z 30:700. Column names are the integer m/z values.

Additional attribute: attr(GCMS_data1, "alkanes_TIC"): named numeric vector with the total ion chromatogram of a C9 to C40 alkane ladder standard run in the same sample batch; names give the retention time in minutes; the total ion trace for the entire chromatogram is included.

Source

Van Oystaeyen, A. et al. (2014) "Conserved class of queen pheromones stops social insect workers from reproducing." *Science* **343**, 287-290. doi:10.1126/science.1244899

Details

Co-eluting compounds present with retention times and diagnostic ions:

RT (min)CompoundDiagnostic ions
26.8415-Methylnonacosane224, 225
26.9113-Methylnonacosane196, 225
26.9411-Methylnonacosane168, 280
26.95Eicosamethylcyclodecasiloxane73, 147, 221, 281, 355, 429, 503
27.019-Methylnonacosane140, 308
27.117-Methylnonacosane112, 336

Author

Tom Wenseleers tom.wenseleers@kuleuven.be \ Laboratory of Socioecology and Social Evolution, KU Leuven \ https://bio.kuleuven.be/eeb/tw/research \ ORCID: 0000-0002-1434-861X

Examples

data(GCMS_data1)
plotmat(GCMS_data1, 
      xlab = "Elution time (min)",
      ylab = "Mass (m/z)",
      main = "Section of Cataglyphis iberica\nant queen cuticular GC/MS profile")
matplot(x = as.numeric(rownames(GCMS_data1)), 
        y = GCMS_data1^0.2, type = "l", lty = 1, col = rgb(0, 0, 0, 0.1),
        xlab = "Elution time (min)",
        ylab = "Intensity ^ 0.2",
        main = "Section of Cataglyphis iberica\nant queen cuticular GC/MS profile")
plot(x=as.numeric(names(attr(GCMS_data1, "alkanes_TIC"))), 
     y=attr(GCMS_data1, "alkanes_TIC"), 
     xlab="Retention time (min)", 
     ylab="Total ion intensity", 
     main="C9 to C40 alkane ladder standard", 
     type="l")