Dietary Data

Dietary Data Strontium-90 and Cesiunv137 in Rice [National Institute of Agricultural Sciences) Strontium-90 content in rice has been determined fertilizer application and harvest time. at the National Institute of Agricultural Sciences since The analytical procedure applied is the same as 1957, and cesium-137 content in rice since 1961. described on page 9, Issue number 22, of this publica All rice samples are collected at, and sent from tion. national and prefectural agricultural areas throughtout The results obtained from 1969 to 1970 are shown Japan. Sampling locations are shown in figure 4. in table 3 and 4. The annual average of strontium-90 The samples are chosen as representative of agri and cesium-137 contents during the period from 1957 cultural conditions, including soil type, crop variety, to 1969 is shown in figure 3. Table 3. 90Sr in Rice -1969 to 1970- by H. Kobayashi and A. Tsumura (National Institute of Agricultural Sciences) (Continued from Table 6, Issue No. 22, of this publication) -1969- Month Polished Rice Location harvested gCa/Kg pQ/Kg S.U. Sapporo, HOKKAIDO October 0.047 1.2 26 Akita, AKITA II 0.040 2.3 57 Morioka, IWATE ii 0.053 0.5 9 Sendai, MIYAGI tl 0.078 1.7 22 Mito, IBARAKI September 0.057 0.7 12 Konosu, SAITAMA October 0.039 1.1 28 Tachikawa, TOKYO tt 0.063 1.6 25 Kofu, YAMANASHI September 0.067 0.7 10 Takada, NIIGATA // 0.072 2.3 30 Kanazawa, ISHIKAWA it 0.043 1.5 35 Tsu, MIE October 0.064 1.7 27 Osaka, OSAKA November 0.064 0.5 7 Okayama, OKAYAMA II 0.048 0.6 12 Tottori, TOTTORI October 0.042 1.3 31 Tsukushino, FUKUOKA November 0.066 0.9 14 Average for year 0.056 1.2 23 (6) -1970- Polished Rice Month Brown Rice Location harvested gCa/Kg pCi/Kg S.U. gCa/Kg pCi/Kg S.U. Sapporo, HOKKAIDO September 0.084 9.7 149 0.O47 2.6 55 Akita, AKITA •• 0.135 17.0 126 0.058 2.4 41 Morioka, IWATE » 0.121 12.4- 103 0.047 1.2 26 Sendai, MIYAGI . l# 0.109 8.6 79 0.055 1.7 31 Mito, IBAFAKI it 0.100 5.6 56 0.046 1.4 31 Konosu, SAITAMA October 0.13S 8.1 60 0.059 1.2 20 Tachikawa, TOKYO it 0.096 11.0 114 0.055 1.0 18 Kofu, YAMANASHI II 0.072 4.7 65 0.048 0.5 10 Takada, NIIGATA II 0.139 14.5 104 0.056 2.7 48 Kanazawa, ISHIKAWA August 0.121 9.9 82 0.054 1.7 32 Tsu, MIE October 0.074 14.3 192 0.048 1.6 33 Osaka, OSAKA •• 0.100 6.1 61 0.050 1.4 28 Okayama, OKAYAMA November 0.113 4.7 42 0.057 0.9 16 Tottori, TOTTORI October 0.070 8.3 118 0.057 1.8 38 Tsukushino, FUKUOKA November 0.111 8.2 74 0.052 2.6 50 Average for year 0.105 9.5 95 0.052 1.6 32 Table 4. 137Cs in Rice —1969- by H. Kobayashi and A. Tsumura {National Institute of Agricultural Sciences) (Continued from Table 7, Issue No. 22, of this publication) Month Polished Rice Location harvested gK/Kg pCi/Kg C.U. Sapporo, HOKKAIDO October 1.106 24.6 23 Akita, AKITA it 0.993 32.2 34 Morioka, IWATE ii 0.799 33.0 41 Sendai, MIYAGI it 1.113 22.4 20 Konosu, SAITAMA it 0.809 8.8 11 Tachikawa, TOKYO II 1.120 15.8 14 Kofu, YAMANASHI September 1.146 6.3 5 Takada, NIIGATA II 0.933 18.3 19 Kanazawa, ISHIKAWA II 0.826 11.9 15 Tsu, MIE October 1.253 9.9 8 Osaka, OSAKA November 1.360 5.1 4 Okayama, OKAYAMA II 1.253 6.6 5 Tottori, TOTTORI October 0.826 12.4 15 Tsukushino, FUKUOKA November 1.240 7.9 6 Average for year 1.051 15.4 16 (7) Figure 3 Temporal Variation of 90Sr and 137Cs in Rice— 1957 to 1970 - All Japan Mean Values — A 137Cs in Polished Rice • 90Sr in Brown Rice O 90Sr in Polished Rice 0 L_ year (8) Figure 4: Rice Sampling Location 145° E *. Sapporo 2. Afcita 3. Morioka 4. Sendai 5. Mito 6. Konosu 7. Tachikawa 8. Kofu 9. Takada 1G. Kanazawa 11. Tsu 12. Osaka 13. Okayama 14. Tottori 15. Tsukushino .

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