摘要
对 3种不同阵列数的新型二极管阵列检测器 -DAD2 30 (2 5 6阵列 )、DAD2 30 (5 12阵列 )、DAD2 30 (10 2 4阵列 )的基线噪声、漂移、线性范围、波长准确性等性能进行系统考察 ,重点考察阵列分辨率差异对光谱分辨率的影响。通过测试得到 3种检测器性能指标分别为 :基线噪声在 1. 2× 10. 5～ 2 . 1× 10 . 5AU之间 ,基线漂移平均为 6× 10 . 4 AU ,在 2 5 .4nm时对萘的最小检测量以 5 12阵列最好 ,可达 5 . 11× 10 . 10 g ,采用两种方法测试的线性范围都大于 1 0× 10. 4 ,波长准确性误差依次为 0 . 6nm ,1. 2nm ,1. 4nm。各检测器对苯及其同系物的扫描光谱图 ,体现检测器较高的光谱分辨率。实验结果表明 :这种新型系列二极管阵列检测器的性能指标良好 ,满足设计需要 ,可作为高效液相色谱检测器使用。
The series of diode array detectors-DAD230(256 array)?DAD230(512 array)?DAD230(1024 array),were described. The performances of detectors were systematically evaluated with noise drift, dynamic linearity range and wavelength accuracy. The influence of difference of array resolutiones on the spectral resolution was emphasised. The noise are about 1.2×10 -5～2.1×10 -5AU , the drifts is averagely 6×10 -4AU ,detection limit for DAD230(512array) is 5.11×10 -10g (254nm), which is best in these detectors,. and the linear dynamic ranges were more than 1.0×104 with two methods. The absolute deviations of the wavelengths were respectively 0.6nm, 1.2nm, 1.4nm, respectively. The spectrograms of benzene homologues shown the higher spectral resolution. The results had shown that the series of novel diode array detectors had the good performances and meet the need of the design require.
出处
《现代仪器》
2005年第2期45-49,共5页
Modern Instruments
基金
国家十五攻关项目资助
