Table 2 Concentration of lead (Pb) in µg/g of e-liquid for the purchased cigalike ENDS cartridges.

From: Cigalike electronic nicotine delivery systems e-liquids contain variable levels of metals

Brand

Flavor

Purchases

Lead µg/g

1

2

3

4

Average

Blu

Classic tobacco

0.27 (0.03) a,b

0.87 (0.04)

18 (1)

1.2 (0.2)

5.1 (8)

Carolina bold

BLQ d

2.1 (0.6)

0.15 (0.01)

N/A c

1.3 (1)

Magnificent menthol

180 (20)

47 (30)

23 (1)

5.3 (0.5)

62 (70)

Cherry crush

0.24 (0.01)

N/A

22 (0.7)

0.65 (0.05)

8.5 (10)

MarkTen

Classic

BLQ

BLQ

BLQ

BLQ

UTD e

Menthol

BLQ

BLQ

BLQ

BLQ

UTD

Summer fusion

BLQ

BLQ

BLQ

BLQ

UTD

Winter mint

BLQ

BLQ

BLQ

BLQ

UTD

Vuse Solo

Original

BLQ

BLQ

0.01 (0.00)

BLQ

0.01 (0.00)

Menthol

BLQ

BLQ

0.01 (0.00)

BLQ

0.01 (0.00)

Mint

BLQ

BLQ

0.02 (0.00)

N/A

0.02 (0.00)

Berry

BLQ

BLQ

0.03 (0.01)

BLQ

0.03 (0.00)

Chai

BLQ

BLQ

BLQ

BLQ

UTD

Crema

BLQ

BLQ

BLQ

BLQ

UTD

Vuse Vibe

Original

BLQ

BLQ

11 (1)

1.1 (0.5)

5.9 (5)

Menthol

N/A

BLQ

N/A

61 (0.4)

61 (0.4)

Nectar

0.14 (0.00)

BLQ

BLQ

21 (3)

10 (10)

Melon

BLD

1.0 (0.8)

290 (50)

97 (100)

130 (100)

Blank

Propylene glycol

BLQ

Glycerol

BLQ

  1. All samples for which the mean lead concentration is equal to or exceeds the USP limits for lead in inhaled drug products (0.2 μg/g) are bolded.
  2. aConcentrations are reported as mean (standard deviation), n = 3.
  3. bBold indicates the mean metal concentration exceeded the USP limit for an inhaled product.
  4. cN/A indicates the brand and flavor combination was unavailable during the purchase attempt.
  5. dBelow lower limit of quantitation (BLQ).
  6. eUnable to determine (UTD).