Abundances of carbon, nitrogen, oxygen, and other elements in the atmosphere of the giant 30 LMi

We have studied the star 30 LMi using high-dispersion CCD spectra and photographic observations. We estimate the star's effective temperature Teff=7210 K, gravity log g=3.34, and microturbulence velocity ξt=5.8 km/s. The carbon abundance, log ɛ(C)=8.57, is close to the solar value. Nitrogen (log ɛ(N)=7.81), oxygen (log ɛ(O)=8.76), and sulfur (log ɛ(S)=7.20) are slightly underabundant compared to the Sun, by −0.16 dex, −0.11 dex, and −0.13 dex, respectively. A relatively large underabundance of −0.27 dex was found for titanium (log ɛ(Ti)=4.75), whereas zinc shows an over-abundance by +0.21 dex (log ɛ(Zn)=4.81). Sodium (log ɛ(Na)=6.26), silicon (log ɛ(Si)=7.57), calcium (log ɛ(Ca)=6.38), chromium (log ɛ(Cr)=5.62), iron (log ɛ(Fe)=7.51), nickel (log ɛ(Ni)=6.34), and yttrium (log ɛ(Y)=2.34) exhibited abundances close to the solar values. We find no chemical anomalies characteristic of Am stars or δ Scuti stars in the spectrum of 30 LMi.