The impurity composition of the high-purity monoisotopic germane 73GeH4
The method of gas chromatography-mass spectrometry set the composition and concentration of impurities in isotopically enriched high-purity germane <sup>73</sup>GeH<sub>4</sub>. In fractions 73GeH4, selected during its distillation purification, impurities were identified permanent gases, xenon, carbon dioxide, hydrocarbons C1 - C9, aromatic hydrocarbons, chloroethane, 2-chloropropane, homologues of germane, methylgermane, chlorogermane, carbon disulfide, carbonyl sulfide, 1,4 dioxan, difluorodimethylsilane. Impurities xenon, carbonyl sulfide, 1,4-dioxane and difluorodimethylsilane identified for the first time in germane. It was found that the impurities carbon disulfide and xenon are displaced isotopic composition, impurities methylgermane, homologues of germane and chlorogermane as the main component, are isotopically enriched. The correctness of the analysis was confirmed by varying the value of the sample. Limits of detection of impurities was 1·10<sup>-5</sup> - 5·10<sup>-8</sup> vol. %