Post by Admin on Oct 21, 2024 0:41:47 GMT -8
I had been in a previous discussion over whether or not black walnut hulls contained a significant amount of iodine and thus could be used as an iodine source. Despite providing proof of a significant amount of iodine, a particular poster kept claiming that the soils in the "goiter belt" where many black walnut trees are grown were deficient in iodine and thus could not contain iodine. I repeatedly explained the concept of nutrients leaching down in to the subsoils leaving a higher concentration of minerals in the subsoils as opposed to the surface soil. Since most common plants do not have deep root systems they cannot reach the mineral rich subsoils. Walnut trees on the other hand do have root systems that reach in to the subsoils picking up minerals many other plants cannot reach.
I posted the following evidence of the leaching of iodine in to the subsoils beyond the root systems of many plants:
www.graystonelabs.com/Iodine.html
"Price and Calvert
studied iodine in submarine mud and documented a dynamic system of organic iodine fixation at the
sediment/aqueous interface, burial and eventual oxidation to I2 which then migrated back to the interface.
Ninety percent of the iodine fixed at the interface is liberated after the first 10 meters of burial."
Ten meters down. How many commercial food crops have roots that extend that deep? Black walnut trees have roots that will reach that depth.
And another study showing the varying level of iodine at different soil depths depending on the soil. Note that in some cases the iodine content was highest at a depth that most crop plants do not have a root structure to reach:
www.niaes.affrc.go.jp/annual/r200.../no49.html
Topic 3: Comparison of vertical distributions of iodine in soils of a paddy field, an upland field, and a forest plot
Iodine is an essential component of thyroid hormones, and about 200 million people worldwide suffer goiter because of a deficiency of this element. Iodine, however, is highly toxic to higher plants. The Chernobyl disaster of 1986 sent large quantities of 131I (half-life 8 days) streaming into the environment. Further, 129I (half-life 15.7 million years) can be released from nuclear fuel reprocessing facilities, so it is important that a 129I monitoring system be installed in the facility under construction at the village of Rokkasho, Japan.
To study the fate of iodine in the environment, we considered the vertical distribution of iodine in the soil to a depth of 50 m in a paddy field, an upland field, and a forest plot situated in a diluvial upland at NIAES.
The soil iodine concentrations to 2 m ranged from forest plot > upland field >> paddy field. In the upland field, the iodine concentrations (in mg kg-1 dry weight) of the surface layers and the next layer (the Ap1, Ap2, and 1A1 horizons, 0-30 cm) were the highest (42-44), and in the forest plot the iodine concentrations of the surface layers and the next layer (Ap, A, and AB horizons, 0-29 cm) were the highest (65-71). In the paddy field, the surface layer (Apg horizon, 0-18 cm) (the most reducing horizon), was eluvial with regard to iodine and featured a low content of 2.8; the iodine concentration (5.3) of the slightly oxidizing Bg1 horizon (18-36 cm) was higher than that of the surface layer, and the iodine concentration (12) of the 2Bw horizon (60-89 cm), which lacked gleyzation, was highest. From the depth at which the first aquiclude (composed of heavy clay) appeared, to the depth at which the second aquifer (composed primarily of sand and fine sand) appeared, the iodine concentration rapidly decreased to very low level of around 0.1 on 3 sampling locations. There was little difference between the 3 sampling locations in terms of the zones at, and beneath, the reductive second permeable layer, situated below the water table (Fig. 4). In the second aquiclude, which contained mostly clay and silt, the iodine concentration increased with depth and reached 5 mg kg-1 on 3 sampling locations. The layers from the third permeable layer to the third aquiclude were more reducing and had a higher pH, which promoted the elution of iodine at levels ranging from 0.02 to 1.0. There, the iodine level on 3 sampling locations was low, and there was little difference between the levels in the permeable portions and those in the third aquiclude. These results are useful for forecasting the behavior of radioactive iodine in the environment. (N. Kihou)
I posted the following evidence of the leaching of iodine in to the subsoils beyond the root systems of many plants:
www.graystonelabs.com/Iodine.html
"Price and Calvert
studied iodine in submarine mud and documented a dynamic system of organic iodine fixation at the
sediment/aqueous interface, burial and eventual oxidation to I2 which then migrated back to the interface.
Ninety percent of the iodine fixed at the interface is liberated after the first 10 meters of burial."
Ten meters down. How many commercial food crops have roots that extend that deep? Black walnut trees have roots that will reach that depth.
And another study showing the varying level of iodine at different soil depths depending on the soil. Note that in some cases the iodine content was highest at a depth that most crop plants do not have a root structure to reach:
www.niaes.affrc.go.jp/annual/r200.../no49.html
Topic 3: Comparison of vertical distributions of iodine in soils of a paddy field, an upland field, and a forest plot
Iodine is an essential component of thyroid hormones, and about 200 million people worldwide suffer goiter because of a deficiency of this element. Iodine, however, is highly toxic to higher plants. The Chernobyl disaster of 1986 sent large quantities of 131I (half-life 8 days) streaming into the environment. Further, 129I (half-life 15.7 million years) can be released from nuclear fuel reprocessing facilities, so it is important that a 129I monitoring system be installed in the facility under construction at the village of Rokkasho, Japan.
To study the fate of iodine in the environment, we considered the vertical distribution of iodine in the soil to a depth of 50 m in a paddy field, an upland field, and a forest plot situated in a diluvial upland at NIAES.
The soil iodine concentrations to 2 m ranged from forest plot > upland field >> paddy field. In the upland field, the iodine concentrations (in mg kg-1 dry weight) of the surface layers and the next layer (the Ap1, Ap2, and 1A1 horizons, 0-30 cm) were the highest (42-44), and in the forest plot the iodine concentrations of the surface layers and the next layer (Ap, A, and AB horizons, 0-29 cm) were the highest (65-71). In the paddy field, the surface layer (Apg horizon, 0-18 cm) (the most reducing horizon), was eluvial with regard to iodine and featured a low content of 2.8; the iodine concentration (5.3) of the slightly oxidizing Bg1 horizon (18-36 cm) was higher than that of the surface layer, and the iodine concentration (12) of the 2Bw horizon (60-89 cm), which lacked gleyzation, was highest. From the depth at which the first aquiclude (composed of heavy clay) appeared, to the depth at which the second aquifer (composed primarily of sand and fine sand) appeared, the iodine concentration rapidly decreased to very low level of around 0.1 on 3 sampling locations. There was little difference between the 3 sampling locations in terms of the zones at, and beneath, the reductive second permeable layer, situated below the water table (Fig. 4). In the second aquiclude, which contained mostly clay and silt, the iodine concentration increased with depth and reached 5 mg kg-1 on 3 sampling locations. The layers from the third permeable layer to the third aquiclude were more reducing and had a higher pH, which promoted the elution of iodine at levels ranging from 0.02 to 1.0. There, the iodine level on 3 sampling locations was low, and there was little difference between the levels in the permeable portions and those in the third aquiclude. These results are useful for forecasting the behavior of radioactive iodine in the environment. (N. Kihou)