采用OBLF QSN750型光电直读光谱仪测定钛合金中13种元素（即Al、V、Mo、Sn、Zr、Fe、Si、Cu、Cr、Mn、Ni、W、Nb），文中对仪器工作条件作了介绍。通过曲线的平移或转动对分析线的光谱干扰作出校正，对分析的钛合金样品的大小和形态具体规定如下：①铸造样品外径 ≥ 40 mm，厚度 ≥ 310 mm；②切割加工的样品（棒状）直径 ≥ 10 mm，长度约40 mm；（板状）厚度 ≥ 0.5 mm，面积 ≥ 30 mm×30 mm；（块状）厚度 ≥ 5 mm，面积 ≥ 30 mm×30 mm，以上各种形状的样品可采用切削和磨制将其加工出一个合适的分析平面。采用48块钛合金标准样品建立了测定元素的校准曲线，其中Al、V、Mo、Sn、Zr、Cu（324.75 nm）及Cr的曲线采用分段拟合，以得到更好的相关系数。另取2块钛合金标准样品，按所提出方法测定以验证其精密度，结果表明：13个元素测定值的相对标准偏差（n=11）在0.34%~5.8%之间。5个不同牌号的钛合金样品的分析结果与电感耦合等离子体原子发射光谱法和化学法的分析结果相符。

OBLF QSN750 Photoelectric direct-reading spectrometer was used in the determination of 13 elements (i.e., Al, V, Mo, Sn, Zr, Fe, Si, Cu, Cr, Mn, Ni, W, Nb) in titanium alloys, and working conditions of the instrument were reported in detail. Correction of spectral interferences with the analytical spectral lines was made by translational or rotational moving of the curves. Size and shape of the solid samples required for the analysis were stipulated as follows:① for casting samples:oulter diameter ≥ 40 mm, thickness ≥ 10 mm; ② for cutting samples:(in stick form) diameter ≥ 10 mm, length ca. 40 mm; (in plate form) thickness ≥ 0.5 mm, area ≥ 30 mm×30 mm; (in lump form) thickness ≥ 5 mm, area ≥ 30 mm×30 mm. All the solid samples in various shapes should be processed by cutting or grinding to give a suitable, plain surface for analysis. Calibration curves of the 13 elements were prepared by using 48 standard samples of titanium alloys and the calibration curves of 7 elements (i.e., Al, V, Mo, Sn, Zr, Cu 324.75 nm and Cr) were prepared by the method of segmented fitting in order to obtain better correlation coefficients. Two standard samples of titanium alloy were analyzed in parallel by the proposed method to test its precision, values of RSDs (n=11) found for the 13 elements were in the range of 0.34% to 5.8%. Five samples of titanium alloys of various models were analyzed by the proposed method, giving determined values in consistency with those found by ICP-AES and chemical method.