3 3 8   TB q / mm ol ▁( 9 1 3 1   C i / mm ol ). ▁Typ ical ▁safety ▁pre ca utions ▁when ▁working ▁with ▁ph osph orus - 3 2 ▁include ▁we aring ▁a ▁personal ▁dos imeter ▁to ▁monitor ▁expos ure ▁and ▁an ▁ac ry lic ▁or ▁pers pe x ▁radiation ▁shield ▁to ▁protect ▁the ▁body . ▁D ense ▁shield ing , ▁such ▁as ▁lead , ▁is ▁less ▁effective ▁due ▁to ▁the ▁high - energy ▁bre ms stra hl ung ▁produced ▁by ▁the ▁interaction ▁of ▁the ▁beta ▁particle ▁and ▁the ▁shield ing . ▁Because ▁the ▁beta ▁radiation ▁from ▁ph osph orus - 3 2 ▁is ▁blocked ▁by ▁around ▁ 1   m ▁of ▁air ▁it ▁is ▁also ▁advis able ▁to ▁wear ▁dos im eters ▁on ▁the ▁parts ▁of ▁the ▁body , ▁for ▁example ▁the ▁fingers , ▁which ▁come ▁into ▁close ▁contact ▁with ▁the ▁ph osph orus - 3 2 - cont aining ▁sample . ▁ ▁References ▁ ▁External ▁links ▁▁▁▁ β - ▁DE CA Y , ▁ β + ▁DE CA Y , ▁E LECT R ON ▁C AP T URE , ▁& ▁ISO M ER IC ▁TR AN S ITION ▁ ▁Category : Is ot op es ▁of ▁ph osph orus <0x0A> </s> ▁D ys p essa ▁ser ica ▁is ▁a ▁species ▁of ▁moth ▁of ▁the ▁family ▁C oss idae . ▁It ▁is ▁found ▁in ▁Iran . ▁ ▁References ▁ ▁Category : M oth s ▁described ▁in ▁ 1 9 3 8 ▁Category : D ys