z 

 llJ 



o 

 o 



z 

 o 



I- 



0. 

 (T 

 O 



in 

 m 



< 



a. 



200 



300 



600 



700 



400 500 



WAVE LENGTH, m^ 



Fig. 7-4. The absorption spectra of precipitated and dried protochlorophyll dissolved 

 in ether, acetone, and methanol. {Koski and Smith, 1948.) 



z 



LU 



O 



o 



I- 

 o 



CD 



< 



140 



100 



60 - 



20 - 



400 



700 



400 



500 600 



WAVE LENGTH, m/i 



700 



500 600 

 WAVE LENGTH, m/z 



Fig. 7-5. Fig. 7-6. 



Fig. 7-5. Comparison of absorption spectra of barley-leaf protochlorophyll and 

 pumpkin-seed-coat protochlorophyll in ether. The relative absorption values of seed- 

 coat protochlorophyll {Krasnovskii and Voinovskaya, 1949) are compared with the ab- 

 sorption curve of barley-leaf protochlorophyll (Koski and Smith, 1948) after the value 

 of the seed-coat protochlorophyll has been adjusted to the curve at 623 m/i. 

 Fig. 7-6. Absorption spectra of chromatograi)hically purified chlorophylls a and b in 

 ether. The chlorophyll content of the solutions was determined by magnesium 

 analysis. 



404 



