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Table 1 Elimination half-times (T1/2) of Au and Ag in organs (days)

From: Biokinetics of subacutely co-inhaled same size gold and silver nanoparticles

Exposure

AuNP (days)

AuNP + AgNP (days)

AgNP (days)

AuNP + AgNP

(days)

Measured

Au

Ag

Lung*

81.5

54.2

3.1 (fast)

48.5 (slow)

2.2 (fast)

28.4 (slow)

Liver

192.60

221.4

1.4

2.5

Kidneys

Accumulation

Accumulation

Accumulation

Accumulation

Spleen

177.0

Accumulation

Accumulation

NE

Testes

NE

Accumulation

Accumulation

Accumulation

Epididymis

Accumulation

Accumulation

29.9 days

Accumulation

Olfactory bulb

20.4

NE

75.1

17.8

Eyes

25.8

NE

68.7

128.6

Brain

NE

NE

Accumulation

108.9

Hilar lymph nodes

65.3

25.2

11.4

2.8

Brachial lymph nodes

10.8

11.1

59.7

53.5

Thymus

17.7

NE

89.5

Accumulation

Blood

2.2

NE

NE

NE

  1. NE, not eliminated; Accumulated, Au or Ag concentration is increased during PEO
  2. *Kim et al. [3]