News 2022 Niigata prefecture sake brewing rice Radioactive substance test results

2023/ 02/ 10

XNUMX. Survey and inspection method

  • Target area: 5 points in Niigata prefecture (Kaetsu East, Kaetsu West, Sado, Chuetsu, Joetsu)
  • Target varieties: 2022 Niigata Prefecture “Gohyakumangoku”, “Takane Nishiki”, “Koshitanrei”
  • Collection method: Brown rice is collected and analyzed at the time of harvest.
  • Analytical organization: Niigata Prefectural Institute for Environmental Health
  • Analytical method: Gamma ray spectrum by germanium semiconductor detector
  • Target nuclides: radioactive iodine, radioactive cesium
  • Lower limit of quantification: 5Bq / kg (becquerel)
    (The lower limit of quantification is the minimum value that can be quantified by the analytical method and the minimum value that the analytical institution can prove based on the measurement.)

XNUMX, test results

"Gohyakumangoku" from Niigata Prefecture (produced in 2022)

Inspection area Collection / submission date Proof date Radioiodine (5Bq / kg) Radioactive cesium (5Bq / kg)
I-131 CS-134 CS-137

Kaetsu East

January 9

January 10

Not detected

Not detected

Not detected

Shimokoshi West

January 9

January 10

Not detected

Not detected

Not detected

Sado

January 9

January 10

Not detected

Not detected

Not detected

Chuetsu

January 9

January 10

Not detected

Not detected

Not detected

Joetsu

January 9

January 12

Not detected

Not detected

Not detected

* Not detected ... Indicates that the value is below the lower limit of quantification for each nuclide to be inspected.

"Takane Nishiki" from Niigata Prefecture (produced in 2022)

Inspection area Collection / submission date Proof date Radioiodine (5Bq / kg) Radioactive cesium (5Bq / kg)
I-131 CS-134 CS-137

Kaetsu East

January 9

January 10

Not detected

Not detected

Not detected

Shimokoshi West

January 9

January 10

Not detected

Not detected

Not detected

Sado

January 9

January 10

Not detected

Not detected

Not detected

Chuetsu

January 10

January 10

Not detected

Not detected

Not detected

Joetsu

January 9

January 12

Not detected

Not detected

Not detected

* Not detected ... Indicates that the value is below the lower limit of quantification for each nuclide to be inspected.

"Koshitanrei" from Niigata Prefecture (produced in 2022)

Inspection area Collection / submission date Proof date Radioiodine (5Bq / kg) Radioactive cesium (5Bq / kg)
I-131 CS-134 CS-137

Kaetsu East

January 9

January 10

Not detected

Not detected

Not detected

Shimokoshi West

January 9

January 10

Not detected

Not detected

Not detected

Sado

January 9

January 10

Not detected

Not detected

Not detected

Chuetsu

January 9

October 5, R2

Not detected

Not detected

Not detected

Joetsu

January 9

January 12

Not detected

Not detected

Not detected

* Not detected ... Indicates that the value is below the lower limit of quantification for each nuclide to be inspected.

Please see here for the radioactivity test of sake rice produced in Reiwa 3nd year.