Table 1:

Elemental abundance of PNe with far-infrared data in addition to optical and UV data.

PNe	He/H	C/H	N/H	O/H	Ne/H	S/H	Ar/H	R	Morph	Ref.
		10-4	10-4	10-4	10-4	10-5	10-6	(kpc)
BD+30 3639		7.3	1.1	4.6	1.9	0.64	5.2	7.6	R	a
Hb 5	0.123		4.5	4.5	2.2	0.70	5.5	6.0	B	b
He 2-111	0.185	1.1	3.0	2.7	1.6	1.5	5.5	6.2	B	c
Hu 1-2	0.127	1.6	1.9	1.6	0.49	0.42	1.1	7.9	B	d
IC 418	>0.072	6.2	0.95	3.5	0.88	0.44	1.8	8.8	E	e
IC 2165	0.104	4.8	0.73	2.5	0.57	0.45	1.2	9.8	E	e,
IC 4191	0.123		1.49	7.7	4.7	1.6	4.45	7.0	E	p
M 1-42	0.161	10.5	7.5	8.3	4.4	2.8	8.6	3.0	E	h
Me 2-1	0.1	7.0	0.51	5.3	0.93	0.91	1.6	5.8	R	r
Mz 3	>0.080	<16.	3.0	2.3	1.2	1.0	5.0	6.3	B	q
NGC 40	>0.046	19	1.3	5.3	1.4	0.56	3.4	7.9	E	f
NGC 2022	0.106	3.66	0.99	4.74	1.34	0.63	2.7	9.4	E	p
NGC 2440	0.119	7.2	4.4	3.8	1.1	0.47	3.2	8.9	B	g
NGC 5315	0.124	4.4	4.6	5.2	1.6	1.2	4.6	6.3	R	i
NGC 5882	0.108	2.2	1.6	4.8	1.5	1.3	2.9	7.2	E	e,
NGC 6153	0.140	6.8	4.8	8.3	3.1	1.9	8.5	6.9	E	f
NGC 6302	0.170	0.6	2.9	2.3	2.2	0.78	6.0	6.4	B	j
NGC 6445	0.151	7.4:	2.4	7.4	2.0	0.79	3.8	5.8	B	k
NGC 6537	0.149	1.7	4.5	1.8	1.7	1.1	4.1	6.0	B	c
NGC 6543	0.118	2.5	2.3	5.5	1.9	1.3	4.2	8.1	E	a
NGC 6741	0.110	6.4	2.8	6.6	1.8	1.1	4.9	6.5	E	l
NGC 6818	0.099	5.4	1.26	4.8	1.27	0.94	2.7	6.6	E	p
NGC 6886	0.107	14.3	4.2	6.5	2.0	1.0	2.1	7.7	E	o
NGC 7027	0.106	5.2	1.5	4.1	1.0	0.94	2.3	7.4	E	m
NGC 7662	0.088	3.6	0.67	4.2	0.64	0.66	2.1	8.2	E	l
IC 2448	0.094	2.7	0.55	2.5	0.64	0.20	1.2	8.0	E	s
NGC 2392	0.080	3.3	1.85	2.9	0.85	0.50	2.2	8.4	E	t
NGC 6826	0.10	4.8	0.58	3.95	1.5	0.26	1.4	8.0	E	u
NGC 3242	0.092	1.95	1.35	3.8	0.90	0.28	1.7	8.1	E	v
NGC 6369	0.102	-	0.79	4.0	0.79	0.60	1.6	7.2	R	v
NGC 6210	0.092	1.2	0.70	4.9	1.2	0.74	2.3	7.0	R	w
NGC 2792	0.103	1.1	0.68	2.1	0.74	0.43	1.6	8.2	E	x
NGC 1535	0.085	1.6	0.21	2.6	0.53	0.13	1.1	9.9	E	z

Notes.   Galactocentric distance assuming the Sun is at 8 kpc from the center, Morphology: R = round, E = elliptical, B = bipolar.
 Higher resolution observations.

References. a) Bernard-Salas et al. 2003, A&A 406, 165; b) Pottasch et al. 2006; c) Pottasch et al. 2000, A&A, 363, 767; d) Pottasch et al. 2003, A&A, 401, 205; e) Pottasch et al. 2004, A&A, 423, 593; f) Pottasch et al. 2003, A&A, 409, 599; g) Bernard-Salas et al. 2002, A&A, 387, 301; h) Pottasch et al. 2007, A&A, 471, 865; i) Pottasch et al. 2002, A&A, 393, 285; j) Pottasch et al. 1999, A&A, 347, 975; k) van Hoof et al. 2000, ApJ, 532, 384; l) Pottasch et al. 2001, A&A, 380, 684; m) Bernard-Salas et al. 2001, A&A 367, 949; o) Pottasch & Surendiranath 2005, A&A, 432, 139; p) Pottasch et al. 2005, 436, 965; q) Pottasch & Surendiranath 2005, A&A, 444, 861; r) Surendiranath et al. 2004, A&A, 421, 1051; s) Guiles, S. et al. 2007, ApJ, 660, 1282; t) Pottasch et al. 2008, A&A, 481, 393; u) Surendiranath & Pottasch 2008, A&A, 483, 519; v) Pottasch & Bernard-Salas 2008, A&A 490, 715; w) Pottasch et al. 2009, A&A, 499, 249; x) Pottasch et al. 2009, A&A, 502, 189; z) unpublished.