Table I
Cary-14 absorbance values of potassium dichromate Solution A (0.006006% in 0.01N H2 SO4 ).
Inst. Ser. No. Wavelength (mμ ) 220 Min 235 Max 257 280 Min 313 330 Max 350 380 400 31 0.966 0.755 0.871 0.633 0.294 0.477 0.645 0.341 0.148 54 0.999 0.775 0.887 0.650 0.300 0.476 0.650 0.346 0.152 60 0.972 0.730 0.845 0.620 0.282 0.452 0.627 0.331 0.137 62 0.980 0.755 0.870 0.635 0.296 0.474 0.644 0.343 0.149 89 0.924 0.733 0.868 0.618 0.294 0.487 0.642 0.332 0.145 127 0.984 0.735 0.853 0.628 0.288 0.466 0.633 0.329 0.140 144 0.956 0.740 0.853 0.626 0.288 0.464 0.637 0.340 0.146 161 0.990 0.755 0.870 0.641 0.294 0.465 0.643 0.344 0.151 145 0.976 0.764 0.878 0.643 0.295 0.472 0.649 0.348 0.150 Mean 0.972 0.749 0.866 0.633 0.292 0.470 0.641 0.339 0.146 Median 0.976 0.755 0.870 0.633 0.294 0.472 0.643 0.341 0.148 σ A 0.021 0.012 0.011 0.010 0.005 0.009 0.007 0.007 0.005 V 2.2 1.6 1.3 1.6 1.7 1.9 1.1 2.1 3.4
Table II
Cary-14 absorbance values of potassium dichromate Solution B (0.012002% in 0.01N H2 SO4 ).
Inst. Ser. No. Wavelength (mμ ) 220 Min 235 Max 257 280 Min 313 330 Max 350 380 400 31 1.924 1.519 1.765 1.300 0.585 0.947 1.294 0.709 0.309 54 2.005 1.544 1.789 1.325 0.592 0.940 1.299 0.713 0.315 60 1.908 1.510 1.732 1.278 0.575 0.911 1.275 0.704 0.299 62 1.965 1.547 1.794 1.328 0.595 0.957 1.313 0.719 0.320 89 1.894 1.514 1.750 1.280 0.580 0.950 1.283 0.702 0.306 127 1.926 1.497 1.749 1.302 0.579 0.930 1.287 0.701 0.304 144 1.927 1.520 1.765 1.308 0.583 0.943 1.295 0.711 0.315 161 1.964 1.520 1.765 1.311 0.587 0.931 1.293 0.716 0.318 145 1.911 1.519 1.762 1.304 0.587 0.936 1.293 0.707 0.313 Mean 1.936 1.521 1.763 1.304 0.585 0.938 1.292 0.709 0.311 Median 1.926 1.519 1.765 1.304 0.585 0.940 1.293 0.709 0.313 σ A 0.033 0.015 0.018 0.016 0.006 0.013 0.010 0.006 0.007 V 1.7 1.0 1.0 1.2 1.0 1.4 0.8 0.8 2.2
Table III
Cary-11 absorbance values of potassium dichromate Solution A (0.006006% in 0.01N H2 SO4 ).
Inst. Ser. No. Wavelength (mμ ) 220 Min 235 Max 257 280 Min 313 330 Max 350 380 400 25 0.977 0.751 0.866 0.634 0.294 0.468 0.639 0.324 0.129 37 0.968 0.753 0.872 0.644 0.300 0.474 0.648 0.348 0.156 43 1.071 0.749 0.853 0.630 0.292 0.468 0.627 0.300 0.109 52 0.983 0.744 0.860 0.628 0.284 0.454 0.637 0.337 0.136 67 0.983 0.749 0.865 0.629 0.292 0.463 0.639 0.327 0.129 82 1.001 0.751 0.862 0.638 0.291 0.466 0.631 0.309 0.114 89 0.969 0.753 0.858 0.618 0.293 0.458 0.616 0.308 0.107 101 1.025 0.751 0.846 0.608 0.289 0.460 0.618 0.307 0.114 113 0.966 0.750 0.868 0.641 0.291 0.465 0.646 0.322 0.118 123 0.964 0.760 0.880 0.635 0.295 0.480 0.647 0.312 0.112 142 0.980 0.761 0.874 0.634 0.293 0.473 0.637 0.314 0.112 144 0.930 (0.670)a 0.840 0.622 0.290 0.472 0.636 0.310 0.118 158 0.947 0.732 0.872 0.624 0.291 0.482 0.647 0.305 0.110 168 0.983 0.758 0.874 0.636 0.297 0.472 0.644 0.317 0.121 172 0.954 0.753 0.866 0.632 0.301 0.482 0.653 0.328 0.128 216 0.948 0.766 0.879 0.635 0.302 0.488 0.641 0.315 0.123 Mean 0.978 0.752 0.865 0.636 0.293 0.470 0.638 0.318 0.122 Median 0.973 0.751 0.866 0.633 0.292 0.470 0.639 0.314 0.118 σ A 0.032 0.008 0.011 0.010 0.004 0.009 0.012 0.012 0.012 V 3.3 1.1 1.3 1.6 1.4 1.9 1.9 3.8 9.8
a Figure not included in calculations.
Table IV
Cary-11 absorbance values of potassium dichromate Solution B (0.012002% in 0.01N H2 SO4 ).
Inst. ser No. Wavelength (mμ ) 220 Min 235 Max 257 280 Min 313 330 Max 350 380 400 25 1.975 1.522 1.763 1.316 0.590 0.926 1.295 0.680 0.264 37 1.900 1.502 1.750 1.300 0.584 0.936 1.291 0.706 0.320 43 2.002 1.522 1.764 1.314 0.587 0.946 1.286 0.640 0.233 52 2.045 1.518 1.778 1.306 0.577 0.904 1.290 0.704 0.293 67 1.965 1.513 1.750 1.300 0.588 0.931 1.287 0.696 0.289 82 1.899 1.513 1.753 1.311 0.587 0.940 1.289 0.658 0.249 89 (1.840)a 1.501 (1.688) (1.247) 0.569 0.941 (1.251) 0.629 0.250 101 1.900 1.498 1.730 1.260 0.577 0.947 1.272 0.633 0.248 113 1.962 1.501 1.750 1.304 0.578 0.918 1.292 0.664 0.248 123 1.917 1.525 1.773 1.317 0.595 0.960 1.305 0.655 0.252 142 1.965 1.520 1.760 1.303 0.585 0.939 1.289 0.660 0.253 144 1.920 (1.455) 1.762 1.295 0.588 0.939 1.293 0.649 0.250 158 1.922 1.517 1.786 1.298 0.585 0.966 1.295 0.641 0.242 168 1.995 1.523 1.761 1.311 0.597 0.944 1.301 0.670 0.257 172 1.926 1.528 1.764 1.305 0.598 0.963 1.309 0.678 0.262 216 1.936 1.531 1.761 1.299 0.590 0.938 1.294 0.667 0.259 Mean 1.955 1.515 1.760 1.303 0.586 0.940 1.289 0.665 0.261 Median 1.962 1.519 1.761 1.304 0.587 0.940 1.292 0.662 0.252 σ A 0.041 0.010 0.103 0.013 0.007 0.016 0.009 0.023 0.020 V 2.1 0.7 0.7 1.0 1.2 1.7 0.7 3.5 7.7
a Figures in parentheses not included in calculations.
Table V
Absorptivity (1%, 1 cm) values of potassium dichromate.
Wavelength (mμ ) Test group Min 235 Max 257 Min 313 Max 350 Cary-14, Solution A 125.6 144.3 49.0 107.0 Cary-11, Solution A 125.6 144.7 49.0 107.0 Cary-14, Solution B 126.4 146.4 48.7 107.6 Cary-11, Solution B 126.3 146.4 48.9 107.8 Hartreea 124.8 145.2 48.7 106.7 Cama, Collins, and Mortonb 124.25 144.9 48.6 107.8 Rileyc 124.8 144.8 49.2 107.6 Gridgemand 125.2 145.6 48.9 107.0 Ketelaar et al .e 124.60 144.76 48.77 107.35
a See reference
4 .
b Cama, Collins, and Morton, Biochem. J.
50, 48 (1951).
c Cf. reference b.
d See reference
5 .
e See reference
6 .
Table VI
Cary-14 absorbance values of filter No. 587. Near infrared.
Inst. Ser. No. Wavelength (μ ) Min 0.75 1.0 Max 1.25 Max 1.51 Max 1.78 2.1 2.4 2.6 31 0.242 0.556 0.865 0.876 0.906 0.688 0.486 ⋯ 54 0.239 0.556 0.872 0.888 0.913 0.692 0.482 0.420 60 0.239 0.535 0.836 0.856 0.881 0.684 0.483 0.420 62 0.233 0.540 0.846 0.861 0.888 0.679 0.479 0.418 89 0.237 0.533 0.845 0.862 0.890 0.689 0.483 0.421 127 0.240 0.551 0.852 0.867 0.894 0.686 0.482 0.424 144 0.237 0.563 0.857 0.879 0.906 0.693 0.488 0.423 145 0.237 0.551 0.852 0.866 0.893 0.683 0.480 ⋯ 161 ⋯ 0.550 0.852 0.869 0.895 0.688 0.485 0.422 Mean 0.238 0.548 0.853 0.869 0.896 0.686 0.483 0.421 Median 0.238 0.551 0.852 0.867 0.894 0.688 0.483 0.421 σ A 0.002 0.010 0.010 0.009 0.010 0.004 0.003 0.002 V 1.0 1.8 1.2 1.1 1.1 0.6 0.6 0.5
Table VII
Cary-14 absorbance values of filter No. 5120. Near infrared.
Inst. Ser. No. Wavelength (μ ) Min 0.774 Max 0.807 Max 0.879 Max 1.065 Max 1.218 Max 1.515 Max 1.695 Max 1.903 Min 2.165 Max 2.385 31 0.161 1.932 0.614 0.100 0.126 0.456 0.085 0.346 0.112 0.350 54 0.162 1.950 0.616 0.101 0.126 0.458 0.088 0.348 0.114 0.350 60 0.159 1.903 0.594 0.088 0.112 0.444 0.083 0.339 0.107 0.337 62 0.160 1.980 0.607 0.096 0.121 0.451 0.083 0.343 0.107 0.342 89 0.156 1.952 0.614 0.092 0.120 0.453 0.085 0.343 0.110 0.344 127 0.160 1.916 0.607 0.097 0.125 0.453 0.086 0.344 0.108 0.345 144 0.160 1.910 0.615 0.100 0.126 0.457 0.085 0.347 0.110 0.348 145 0.160 1.968 0.613 0.097 0.125 0.457 0.084 0.346 0.110 0.349 161 0.164 1.981 0.602 0.095 0.122 0.457 0.090 0.345 0.111 0.345 Mean 0.160 1.944 0.609 0.096 0.123 0.454 0.085 0.345 0.110 0.346 Median 0.160 1.950 0.613 0.097 0.125 0.456 0.085 0.345 0.110 0.345 σ A 0.002 0.028 0.007 0.004 0.004 0.004 0.002 0.003 0.002 0.004 V 1.3 1.5 1.1 4.1 3.5 0.9 2.6 0.8 2.0 1.2