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Knowledge of the elemental abundances of symbiotic giants is essential toaddress the role of chemical composition in the evolution of symbioticbinaries, to map their parent population, and to trace their mass transferhistory. However, there are few symbiotic giants for which the photosphericabundances are fairly well determined. This is the second in a series of paperson chemical composition of symbiotic giants determined from high-resolution (R~ 50000) near-IR spectra. Results are presented for the late-type giant star inthe AE Ara, BX Mon, KX TrA, and CL Sco systems. Spectrum synthesis employingstandard local thermal equilibrium (LTE) analysis and stellar atmosphere modelswere used to obtain photospheric abundances of CNO and elements around the ironpeak (Sc, Ti, Fe, and Ni). Our analysis resulted in sub-solar metallicities inBX Mon, KX TrA, and CL Sco by [Fe/H] ~ -0.3 or -0.5 depending on the value ofmicroturbulence. AE Ara shows metallicity closer to solar by ~0.2 dex. Theenrichment in 14N isotope found in all these objects indicates that the giantshave experienced the first dredge-up. In the case of BX Mon first dredge-up isalso confirmed by the low 12C/13C isotopic ratio of ~8.

Chemical abundance analysis of symbiotic giants - II. AE Ara, BX Mon, KX TrA, and CL Sco